DATA I/O CORPORATION












                                 NOTICE OF 2005

                                 ANNUAL MEETING

                                       and

                                 PROXY STATEMENT










                              DATA I/O CORPORATION





                                                                   April 8, 2005


To Our Shareholders:

You are  cordially  invited  to  attend  the  2005  Annual  Meeting  of Data I/O
Corporation, which will be held at Data I/O's headquarters at 10525 Willows Road
N.E.,  Redmond,  Washington  98052.  The meeting will begin at 2:00 p.m. Pacific
Daylight Time on Thursday, May 19, 2005. Following the meeting, there will be an
opportunity to see some of Data I/O's exciting new products.

Officers  of Data I/O will be  attending  and would be  pleased  to  respond  to
questions  either  during or after the  meeting.  We will  review  the  business
operations of Data I/O for 2004 and the first quarter of 2005 and report on Data
I/O's  strategic plan for the future.  Formal business will include the election
of directors,  and  ratification of the continued  appointment of Grant Thornton
LLP as Data I/O's independent auditors.

Please read the proxy  materials  carefully.  Your vote is  important.  Data I/O
appreciates you considering and acting on the proposals presented.  I am looking
forward to seeing you on May 19th.

                                   Sincerely,


                                   Frederick R. Hume
                                   President and Chief Executive Officer




                             DATA I/O LOCATION MAP




                              DATA I/O CORPORATION

--------------------------------------------------------------------------------
             NOTICE OF ANNUAL MEETING OF SHAREHOLDERS - May 19, 2005
--------------------------------------------------------------------------------


To the Shareholders of Data I/O Corporation:

NOTICE IS HEREBY  GIVEN that the  Annual  Meeting  of  Shareholders  of Data I/O
Corporation  (the  "Company"  or "Data  I/O") will be held at 2:00 p.m.  Pacific
Daylight Time, on Thursday, May 19, 2005, at Data I/O's principal offices, 10525
Willows Road N.E., Redmond, Washington 98052, for the following purposes:

(1)  Election of Directors:  To elect seven  directors,  each to serve until the
     next  annual  meeting  of  shareholders  or until his or her  successor  is
     elected and qualified or until such director's earlier death,  resignation,
     or removal.

(2)  Ratification of Independent  Auditors:  To ratify the continued appointment
     of Grant Thornton LLP as Data I/O's  independent  auditors for the calendar
     year ended December 31, 2005.

(3)  Other  Business:  To  consider  and vote upon such  other  business  as may
     properly  come  before the  meeting or any  adjournments  or  postponements
     thereof.

The Board of Directors has fixed the close of business on March 21, 2005, as the
Record Date for the determination of shareholders  entitled to notice of, and to
vote at, the 2005 Annual Meeting and any adjournment or postponement thereof.


                                     By Order of the Board of Directors




                                     Frederick R. Hume
                                     President and Chief Executive Officer


Redmond, Washington
April 8, 2005

--------------------------------------------------------------------------------

                             YOUR VOTE IS IMPORTANT

Whether or not you expect to attend the meeting in person,  we urge you to sign,
date and return the accompanying proxy card at your earliest convenience, or you
may vote by the internet at  http://www.proxyvoting.com/daio or by telephone, as
provided in the instructions on the proxy card. This will ensure the presence of
a quorum at the meeting.  Promptly  returning a signed and dated proxy card,  or
voting by the internet or by telephone,  will save Data I/O the extra expense of
additional solicitation. Your proxy is revocable at your request any time before
it is voted. If you attend the meeting,  you may vote in person if you wish even
if you have  previously  returned  your  proxy  card.  If you  vote by mail,  an
addressed,  postage-paid envelope is provided in order to make certain that your
shares will be represented at the Annual Meeting.
--------------------------------------------------------------------------------




                              DATA I/O CORPORATION
                             10525 Willows Road N.E.
                            Redmond, Washington 98052
                              --------------------

                                 PROXY STATEMENT

                         ANNUAL MEETING OF SHAREHOLDERS
                                  May 19, 2005

                           INFORMATION REGARDING PROXY

This  Proxy  Statement  and the  accompanying  form of proxy  are  furnished  in
connection with the solicitation of proxies by the Board of Directors ("Board of
Directors") of Data I/O Corporation (the "Company" or "Data I/O") for use at the
Annual  Meeting of  Shareholders  to be held on Thursday,  May 19, 2005, at 2:00
p.m. Pacific Daylight Time at Data I/O's principal  offices,  10525 Willows Road
N.E.,  Redmond,  Washington  98052, and at any adjournment  thereof (the "Annual
Meeting").  Shareholders  of record at the close of  business  on March 21, 2005
(the  "Record  Date") are  entitled  to notice  of,  and to vote,  at the Annual
Meeting.  This Proxy  Statement  and a copy of Data I/O's 2004 Annual  Report to
Shareholders are being mailed to shareholders on or about April 8, 2005.

A proxy card is enclosed for your use. You are  requested on behalf of the Board
of  Directors  to sign,  date,  and return  the proxy  card in the  accompanying
envelope, which is postage-paid if mailed in the United States or Canada, or you
may vote by the internet at http://www.proxyvoting.com/daio, or by telephone, as
provided in the  instructions  on the proxy card. If you vote by the internet or
by telephone, you do not need to mail back the proxy card.

A proxy in the accompanying  form, which is properly signed,  dated and returned
and not revoked,  will be voted in accordance  with the  instructions  contained
therein.  To vote on the election of directors,  check the appropriate box under
Item No. 1 on your proxy card. You may (a) vote for all of the director nominees
as a group, (b) withhold authority to vote for all director nominees as a group,
or (c) vote for all director nominees as a group except those nominees indicated
to the  contrary.  To vote on the proposal to ratify Grant  Thornton LLP as Data
I/O's independent  auditors for the calendar year ended December 31, 2005, check
the  appropriate box under Item No. 2 on your proxy card. You may (a) vote "FOR"
approval of the  ratification  of Grant  Thornton LLP as Data I/O's  independent
auditors,  (b) vote "AGAINST" approval of the ratification of Grant Thornton LLP
as  Data  I/O's  independent  auditors,  or (c)  "ABSTAIN"  from  voting  on the
ratification of Grant Thornton LLP as Data I/O's independent  auditors.  Proxies
which are returned to Data I/O without instructions will be voted as recommended
by the Board of Directors.  Any shareholder who returns a proxy may revoke it at
any time prior to the voting thereof on any matter (without,  however, affecting
any vote taken prior to such  revocation)  by (i)  delivering  written notice of
revocation to the Secretary of Data I/O at Data I/O's  principal  offices,  (ii)
executing and  delivering to Data I/O another proxy dated as of a later date, or
(iii) voting in person at the Annual Meeting.

                     VOTING SECURITIES AND PRINCIPAL HOLDERS

The only  outstanding  voting  securities of Data I/O are shares of common stock
(the "Common  Stock").  As of the Record Date,  there were  8,199,678  shares of
Common Stock issued and outstanding, and each such share is entitled to one vote
at the Annual  Meeting.  The presence in person or by proxy of holders of record
of a  majority  of the  outstanding  shares  of  Common  Stock  is  required  to
constitute  a quorum for the  transaction  of  business  at the Annual  Meeting.
Shares of Common Stock underlying  abstentions will be considered present at the
Annual Meeting for the purpose of calculating a quorum. Under Washington law and
Data I/O's charter  documents,  if a quorum is present,  the seven  nominees for
election  to  the  Board  of  Directors  who  receive  the  greatest  number  of
affirmative  votes  cast at the  Annual  Meeting  shall  be  elected  directors.
Abstentions  will have no effect on the election of  directors  because they are
not cast in favor of any particular candidate.  There can be no broker non-votes
on the election of directors because brokers who hold shares for the accounts of
their clients have  discretionary  authority to vote such shares with respect to
the election of directors.  The proposal to ratify the continued  appointment of
Grant Thornton as Data I/O's independent auditors will be approved,  if a quorum
is  present,  if the number of votes cast in favor of the  proposal  exceeds the
number of votes cast against the proposal.  Abstentions and broker  non-votes on
the  proposal  will have no effect  because  approval  of the  proposal is based
solely on the votes cast.  Proxies and ballots will be received and tabulated by
Mellon  Investor  Services,  an independent  business entity not affiliated with
Data I/O.

The Common Stock is traded on the NASDAQ  SmallCap Stock Market under the symbol
"DAIO".  Effective  December 31, 2002,  the Common  Stock  transferred  from the
NASDAQ National Market to the NASDAQ  SmallCap  Market.  The last sale price for
the Common Stock,  as reported by the NASDAQ  SmallCap Stock Market on March 21,
2005, was $2.99 per share.

The  following  table sets forth  information  with respect to all  shareholders
known by Data I/O to be the  beneficial  owners of more than five percent of its
outstanding  Common  Stock as of March 21,  2005.  Except as noted  below,  each
person or entity  has sole  voting and  investment  powers  with  respect to the
shares shown.



                                                      Amount and Nature
                                                        of Beneficial              Percent of Shares
         Name and Address                                 Ownership                   Outstanding    
                                                                                             
         Glen F. Ceiley                                   1,017,537(1)                   12.41%
         Bisco Industries, Inc.
         1500 N. Lakeview Ave.
         Anaheim, CA  92807

         Leviticus Partners, L.P.                           639,445(2)                    7.80%
         Adam  M. Hutt
         AMH Equity, LLC
         Parameter Partners, LLC
         30 Park Avenue
         Suite 12F
         New York, NY  10016

         John W. Stanton & Theresa E. Gillespie             546,600(3)                    6.67%
         3650 - 131st Ave. SE
         Bellevue, WA  98006
--------------------


(1)  The  holding  shown is as of March 18, 2005 as reported to Data I/O by Glen
     F. Ceiley on behalf of himself, Bisco Industries, Inc. ("Bisco"), and Bisco
     Industries, Inc. Profit Sharing and Savings Plan (the "Bisco Plan") on Form
     4. Mr. Glen Ceiley reported that he holds sole voting and dispositive power
     with respect to 3,557 shares, Bisco holds sole voting and dispositive power
     with  respect to 639,916  shares,  and the Bisco Plan holds sole voting and
     dispositive  power with respect to 336,564  shares.  Mr. Glen Ceiley is the
     President, Chief Executive Officer, director, and sole shareholder of Bisco
     and is also the sole  trustee of the Bisco Plan.  Mr.  Ceiley's  beneficial
     ownership  includes options to purchase 37,500 shares exercisable within 60
     days.

(2)  The holding shown is as of March 18, 2005 as jointly  reported by Leviticus
     Partners,  L.P. ("Leviticus");  AMH  Equity,  LLC  ("AMH");  Adam Hutt; and
     Parameter Partners,  LLC ("Parameter"),  on a Schedule 13D/A filed pursuant
     to Rule 13d-1(b) or 13d-2(b) under the Securities Exchange Act of 1934. The
     Schedule 13D/A indicates  Leviticus holds sole voting and dispositive power
     with   respect  to  600,000  shares;  Parameter  holds    sole  voting  and
     dispositive power with respect to 39,445 shares; AMH is the general partner
     of Leviticus and Parameter; and Adam Hutt is the controlling person of AMH.
     AMH and Adam Hutt each are  deemed to be the  beneficial  owner of  639,445
     shares and each disclaim any beneficial ownership of these shares.

(3)  The holding shown is as of January 30, 2002, as reported by John W. Stanton
     and  Theresa  E.  Gillespie,  husband  and wife,  on a  Schedule  13G filed
     pursuant to Rule 13d-1 of the Securities Exchange Act of 1934. We confirmed
     the holding as unchanged with a representative  of Stanton and Gillespie on
     March  3,  2005.  The  Schedule  13G  indicates  that Mr.  Stanton  and Ms.
     Gillespie  share  voting  and  dispositive  power  with  respect to 546,600
     shares, which they own as tenants-in-common.



Directors' and Officers' Share Ownership

The  following  table  indicates  ownership  of Data I/O's  Common Stock by each
director of Data I/O, each executive  officer named in the  compensation  tables
appearing  later in this Proxy  Statement,  and by all  directors  and executive
officers  as a group,  all as of March  21,  2005.  Data I/O is not aware of any
family relationships between any director, director nominee or executive officer
of Data I/O.


                                     Amount and Nature of    Percent of Shares
Name                                 Beneficial Ownership       Outstanding
                                                            
Glen F. Ceiley                          1,017,537  (1)            12.41%
Frederick R. Hume                         240,183  (2)             2.93%
Joel S. Hatlen                            161,501  (3)             1.97%
Paul A. Gary                              139,657  (4)             1.70%
Edward D. Lazowska                         46,723  (5)              (6)
Daniel A. DiLeo                            42,500  (7)              (6)
Steven M. Quist                            30,000  (8)              (6)
William R. Walker                          10,000  (9)              (6)
All current directors and
 executive officers
 as a group (8 persons)                 1,688,101  (10)           20.59%

-------------------------------
(1)  See  the  above  description  of  Mr.  Ceiley's  ownership  and  beneficial
     ownership.
(2)  Includes options to purchase 121,875 shares exercisable within 60 days.
(3)  Includes options to purchase 67,531 shares exercisable within 60 days.
(4)  Includes options to purchase 37,500 shares exercisable within 60 days.
(5)  Includes options to purchase 37,500 shares exercisable within 60 days.
(6)  Less than 1 percent each.
(7)  Includes options to purchase 37,500 shares exercisable within 60 days.
(8)  Includes options to purchase 30,000 shares exercisable within 60 days.
(9)  Includes options to purchase 10,000 shares exercisable within 60 days.
(10) Includes options to purchase 379,406 shares exercisable within 60 days.

Data I/O is not  aware  of any  arrangement  the  operation  of  which  may at a
subsequent date result in a change of control of Data I/O.

                              CORPORATE GOVERNANCE

In October 2003, the Board of Directors adopted a Corporate  Governance Charter.
In February 2004, the Board of Directors adopted a Nominating Committee Charter,
in March 2004,  adopted an updated Code of Ethics, and in February 2005, adopted
a Compensation  Committee  Charter,  all of which are posted,  together with our
amended and  restated  charter  for the Audit  Committee,  that was  approved in
February 2005, on the corporate  governance  page of our website.  The corporate
governance     page     can     be     accessed     on    our     website     at
www.dataio.com/corporate/ir.asp.   The  amended  and  restated  Audit  Committee
Charter is also  attached  to this Proxy  Statement  as Appendix A. All of these
Charters are consistent with the applicable  requirements of the  Sarbanes-Oxley
Act of 2002 and our NASDAQ listing standards.

Data I/O's Code of Ethics  applies to all  directors,  officers and employees of
Data I/O, including the Chief Executive Officer and the Chief Financial Officer.
The key  principles  of the Code are to act legally,  and with  integrity in all
work for Data  I/O.  We will  post any  amendments  to our Code of Ethics on the
corporate governance page of our website at www.dataio.com/corporate/ir.asp.  In
the unlikely  event that the Board of  Directors  approves any sort of waiver to
the  Code of  Ethics  for  our  executive  officers  or  directors,  information
concerning  such  waiver  will also be posted on our  website.  In  addition  to
posting information  regarding  amendments and waivers on our website,  the same
information  will be  included  in a  Current  Report  on Form 8-K  within  four
business  days  following the date of the  amendment or waiver,  unless  website
posting of such  amendments  or waivers is  permitted by the rules of The NASDAQ
Stock Market, Inc.

                        PROPOSAL 1: ELECTION OF DIRECTORS

At the Annual  Meeting,  the  shareholders  will vote on the  election  of seven
directors to serve until the next Annual  Meeting or until his or her  successor
has been qualified and elected or such director's earlier death,  resignation or
removal. The Board of Directors has approved the seven nominees named below, all
of whom are currently  members of the Board of  Directors.  Each of the nominees
has  indicated  that they are willing and able to serve as  directors.  However,
should one or more of the  nominees not accept the  nomination,  or otherwise be
unwilling or unable to serve,  it is intended that the proxies will be voted for
the  election of a  substitute  nominee or nominees  designated  by the Board of
Directors.

RECOMMENDATION: The Board of Directors recommends a vote FOR each of the
director nominees.

Glen F. Ceiley, age 59, has been a director of Data I/O since February 1999 when
he was  appointed to the Board of Directors  pursuant to a Standstill  Agreement
dated  February 10, 1999 which  expired on February 10,  2000.  Since 1973,  Mr.
Ceiley has been the President and Chief Executive Officer of Bisco Industries, a
distributor of fasteners and electronic  components,  which, as part of a group,
owns approximately  12.41% of the stock of Data I/O. Mr. Ceiley is also Chairman
and CEO of EACO Corporation, formerly Family Steak Houses of Florida, Inc.

Daniel A.  DiLeo,  age 57, has been a director  of Data I/O since May 2000.  Mr.
DiLeo has more than 25 years  experience  in both the system  and  semiconductor
divisions of Lucent  Technologies  and AT&T Companies.  In March 2002, Mr. DiLeo
retired as the Executive  Vice  President of  Optoelectronics  at Agere Systems,
Inc., a former Lucent  subsidiary,  where he had served in such  capacity  since
February 2001. From June 1998 through February 2001, Mr. DiLeo was the President
of the Optoelectronics Division at Lucent Technologies,  Microelectronics Group.
From January 1996 to June 1998, Mr. DiLeo was the Vice President of the Wireless
Business  Unit at Lucent  Technologies,  Inc. Mr. DiLeo is also a director of RF
Micro Devices.

Paul A. Gary,  age 63, has been a director  of Data I/O since March 1998 and was
named Chairman of the Board in May 1999. From 1987 until his retirement in 1996,
Mr. Gary worked for Lucent  Microelectronics  (now Agere Systems,  Inc.) as Vice
President of the High  Performance IC and NETCOM  business  units.  From 1981 to
1987, he held various  leadership  positions with (the former) Western  Electric
Company,  including  Director  of  Engineering  and  Manufacturing  and  General
Manager.  From 1967 to 1981,  Mr. Gary worked for Bell  Laboratories,  finishing
there  as  Laboratory  Director.  Mr.  Gary  is  also  a  director  of  TriQuint
Semiconductors,  Inc. and Broad Air, a private wireless internet provider in New
Jersey.

Frederick R. Hume, age 62, became President and Chief Executive  Officer of Data
I/O on February 23, 1999. He has been a director of Data I/O since January 1999.
From 1988 until his  retirement in 1998, Mr. Hume was Vice President and General
Manager of Keithley  Instruments in Cleveland,  Ohio. From 1972 to 1988, he held
various management positions at John Fluke  Manufacturing,  including Group Vice
President for  Manufacturing  and Research and  Development.  Mr. Hume is also a
director  of two  private  corporations;  ILX  Lightwave  Corporation  and Tamer
Laboratories, Inc.

Edward D.  Lazowska,  age 54, has been a director of Data I/O since August 1996.
Since 1977,  Dr.  Lazowska has been a member of the faculty of the University of
Washington's Department of Computer Science & Engineering. From 1993 to 2001, he
held the position of Department  Chair.  He currently holds the Bill and Melinda
Gates  Endowed  Chair.  Dr.  Lazowska is also a director  of  Intrepid  Learning
Solutions, a private company.

Steven M. Quist,  age 59, has been a director of Data I/O since March 2001. From
1998 to 2003, he was the President and Chief  Executive  Officer of  CyberOptics
Corporation.  He served as a Director of  CyberOptics  from 1991 until May 2004.
From 1992 to February  1998,  Mr. Quist was the President of Rosemount,  Inc., a
subsidiary of Emerson Electric Company, St. Louis, Missouri. Mr. Quist is also a
director of Rimage Corporation and is a director of three private  corporations;
ILX  Lightwave  Corporation,  Scientific  Materials  Corporation,  and  Nervonix
Corporation.

William R. Walker,  age 63, has been a director of Data I/O since  October 2003.
Since 1997, Mr. Walker has been the Chief  Financial  Officer,  Secretary,  Vice
President of Hi/fn, Inc., a manufacturer of integrated circuits and software for
storage and network  infrastructure  developers.  From 1996 to 1997,  he was the
Chief Financial Officer,  Secretary,  Vice President of MMC Networks,  Inc. From
1984 to 1996, Mr. Walker was Senior Vice President and Chief  Financial  Officer
of Zilog, Inc.


                             THE BOARD OF DIRECTORS

Director Independence

Glen F. Ceiley,  Daniel A. DiLeo,  Paul A. Gary,  Edward D. Lazowska,  Steven M.
Quist, and William R. Walker are independent directors,  as defined in Rule 4200
(a)(15) of the National Association of Securities Dealers listing standards (the
"NASD Rules").

Communications with the Board of Directors

Shareholders  may communicate with the Board of Directors by sending an email or
by  sending  a  letter  to Data I/O  Corporation  Board  of  Directors,  c/o the
Secretary,  P.O. Box 97046,  Redmond, WA 98073-9746.  The Secretary will receive
the  correspondence  and forward it to the Chairman of the  applicable  Board of
Directors  Committee  or to any  individual  director or  directors  to whom the
communication is directed.

                                BOARD COMMITTEES

During the year ended  December 31, 2004,  there were five meetings of the Board
of Directors. Each of the incumbent directors who were on the Board of Directors
during  2004  attended  at least 75% of the  aggregate  of the  total  number of
meetings of the Board of Directors  and the total number of meetings held by all
committees  of the  Board of  Directors  on which he served  during  his term of
service  on the Board of  Directors.  Data I/O does not have a policy  requiring
members of the Board of  Directors  to attend the Annual  Meeting,  although  we
typically  encourage  our Board of Directors  to attend.  Mr. DiLeo and Mr. Hume
attended our Annual  Meeting held on May 20, 2004.  No other member of our Board
of Directors attended our 2004 Annual Meeting because our Board of Directors did
not have a meeting scheduled for that day.

The Board of Directors has four standing  Committees:  the Corporate  Governance
Committee,  the Audit Committee,  the Compensation Committee, and the Nominating
Committee.  The Audit Committee  consisted of Messrs.  DiLeo,  Quist, and Walker
(Chair) throughout 2004, and Mr. Lazowska through May 20, 2004. The Compensation
Committee  consisted of Messrs.  Ceiley (Chair),  DiLeo,  and Walker  throughout
2004, and Mr. Gary through May 20, 2004. The Nominating  Committee  consisted of
Messrs.,  Gary,  Lazowska  (Chair),  and Quist  throughout  2004. The Governance
Committee consisted of Messrs. Ceiley, DiLeo (Chair), Gary, Lazowska, Quist, and
Walker throughout 2004.

Corporate Governance Committee

In April 2003, the Board of Directors created a Corporate  Governance  Committee
consisting of all  independent  directors.  The Corporate  Governance  Committee
develops,  recommends to the Board of Directors, and monitors a set of corporate
governance principles applicable to Data I/O. The Corporate Governance Committee
met one time in 2004 and otherwise  conducted its business at Board of Directors
meetings in 2004.

Audit Committee

The Audit  Committee  considers  and  recommends  to the Board of Directors  the
engagement of independent  certified public accountants for the ensuing year and
the  terms of such  engagement;  reviews  the scope of the  audit;  periodically
reviews Data I/O's program of internal control and audit functions; receives and
reviews  the  reports of the  independent  accountants;  and  reviews the annual
financial  report to the directors and  shareholders of Data I/O. Each member of
the Audit Committee is an independent director, as defined by the NASDAQ listing
standards and the  Sarbanes-Oxley  Act of 2002. The Audit  Committee  includes a
financial  expert,  William R. Walker, as defined in the Securities and Exchange
("SEC") rules adopted  pursuant to the  Sarbanes-Oxley  Act of 2002.  Mr. Walker
also has the financial  sophistication  required by Rule  4350(d)(2) of the NASD
Rules.  On February 8, 2005, the Audit  Committee  recommended  and the Board of
Directors  approved  the amended  and  restated  Audit  Committee  Charter.  See
attached  Appendix A. The Audit  Committee  met five times during 2004.  See the
"Report of the Audit Committee."

Compensation Committee

The  Compensation  Committee  makes  recommendations  to the Board of  Directors
concerning the  compensation  of Data I/O's  executive  officers.  The committee
administers Data I/O's management  incentive  compensation program and its stock
option,  stock purchase and stock  appreciation  rights plans.  The Compensation
Committee reviews all employee benefit programs and approves significant changes
in major  programs and all new  programs.  The  Compensation  Committee met four
times during 2004.

Nominating Committee

The Nominating  Committee  seeks  qualified  candidates to serve on the Board of
Directors,  recommends  them  for the  Board  of  Directors'  consideration  for
election  as  directors  at the Annual  Meeting  of  Shareholders  and  proposes
candidates to fill vacancies on the Board of Directors. The Nominating Committee
also recommends  nominees for the various  committees of the Board of Directors.
The Nominating Committee met one time in 2004.

Consideration of Director Nominees

The Nominating  Committee,  in evaluating and determining whether to recommend a
person as a candidate for election as a director,  considers relevant management
and/or technology experience; certain values such as integrity,  accountability,
judgment and adherence to high performance  standards;  independence pursuant to
applicable  guidelines;  ability and  willingness to undertake the required time
commitment to Board functions; and an absence of conflicts of interest with Data
I/O.

Identifying Director Nominees; Consideration of Nominees of the Shareholders

The  Nominating  Committee may employ a variety of methods for  identifying  and
evaluating  nominees for director.  The Committee regularly assesses the size of
the Board,  the need for  particular  expertise  on the Board,  and  whether any
vacancies on the Board are expected due to retirement or otherwise. In the event
that vacancies are  anticipated,  or otherwise  arise,  the Committee  considers
various  potential  candidates  for director  which may come to the  Committee's
attention   through   current   Board   members,   professional   search  firms,
shareholders,  or other  persons.  These  candidates are evaluated at regular or
special meetings of the Committee, and may be considered at any point during the
year.

The Nominating  Committee will consider candidates  recommended by shareholders,
when the nominations are properly submitted, under the criteria summarized above
in  "Consideration  of Director  Nominees" and in accordance with the procedures
described  below in  "Shareholder  Nominations and Proposals for the 2006 Annual
Meeting of Shareholders."  Following  verification of the shareholder  status of
persons  proposing  candidates,  the Committee makes an initial  analysis of the
qualifications  of any candidate  recommended by shareholders or others pursuant
to the criteria  summarized above to determine if the candidate is qualified for
service  on the Data I/O Board of  Directors  before  deciding  to  undertake  a
complete  evaluation  of the  candidate.  If any  materials  are  provided  by a
shareholder or  professional  search firm in connection with the nomination of a
director candidate, such materials are forwarded to the Committee as part of its
review.   Other  than  the   verification  of  compliance  with  procedures  and
shareholder  status,  and the initial  analysis  performed by the  Committee,  a
potential  candidate  nominated  by a  shareholder  is  treated  like any  other
potential candidate during the review process by the Committee. Shareholders did
not propose any candidates for election at the 2005 Annual Meeting.

           COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

For the year ended December 31, 2004, the Compensation Committee of the Board of
Directors consisted of Messrs.  Ceiley,  DiLeo, and Walker, and Mr. Gary through
May 20, 2004. None of these  individuals has served at any time as an officer or
employee of Data I/O or as a member of the board of  directors  or  compensation
committee of any entity that has had one or more executive officers which served
as a member of the Board of Directors or the Compensation Committee.

                               BOARD COMPENSATION

Employee directors  (Frederick R. Hume) do not receive  additional  compensation
for serving on the Board of Directors.  Non-employee  directors  received a cash
retainer  for 2004 of $5,000 for each  quarter of service,  plus $1,000 for each
full Board of Directors meeting attended and $500 for each teleconference  Board
of Directors meeting attended.  Data I/O paid additional quarterly  compensation
to the non-employee  directors for serving as Chairman of the Board of Directors
or as a committee  chair:  $3,750 for  Chairman of the Board of  Directors;  and
$1,250  for  the  Audit,  Compensation,   Nominating  and  Corporate  Governance
Committee chairs. In addition, each non-employee Board of Directors member as of
May 20, 2004, was granted 7,500 stock options. New members who join the Board of
Directors are granted 15,000 shares as an initial grant.  The stock options were
granted  under  the  provisions  and  terms  of the  2000  Plan.  Data  I/O also
reimburses  non-employee  directors for actual travel and out-of-pocket expenses
incurred in connection with service to Data I/O.

The  following  table  shows  compensation  paid  by  Data  I/O to  non-employee
directors during 2004.




                                               Cash Compensation                              Stock Option Grants
                            ---------------------------------------------------------    ----------------------------
                                              Chairman of the Board/
                                 Board          Committee Chairman                                  Number of
Name                          Retainer ($)         Retainer ($)       Meeting Fees ($)           Options (#)(1)
                                                                                         
Glen F. Ceiley                 $20,000              $5,000                $4,500                     7,500
Daniel A. DiLeo                $20,000              $5,000                $4,500                     7,500
Paul A. Gary                   $20,000             $15,000                $4,500                     7,500
Edward D. Lazowska             $20,000              $5,000                $4,500                     7,500
Steven M. Quist                $20,000                  $0                $4,500                     7,500
William R. Walker              $20,000              $3,077*               $4,500                     7,500


*Prorated as of effective date of May 20, 2004
-----------------------------------------
(1)  Stock Options were granted to the directors in May 2004 at an exercise
     price of $2.695 per share. The options granted vest 8.333% quarterly over
     three years and expire at the end of six years.

             SECTION 16(A) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

Section  16(a)  of the  Securities  Exchange  Act of 1934  requires  Data  I/O's
directors,  certain  officers and persons who own more than ten percent (10%) of
Data I/O's  Common  Stock  ("Reporting  Persons")  to file with the SEC  initial
reports of  ownership  and reports of changes in  ownership  of Common Stock and
other  equity  securities  of Data I/O.  Reporting  Persons are  required by SEC
regulations to furnish Data I/O with copies of all Section 16(a) reports.

To Data I/O's  knowledge,  based  solely on its review of copies of such reports
furnished  to Data I/O and written  representations  that no other  reports were
required,  all Section 16(a) filing requirements  applicable to its officers and
directors were complied with during 2004, except in August 2004 Mr. Hume and Mr.
Hatlen each filed one Form 4 late for options  granted in June 2004,  and during
2004, Mr. Ceiley filed ten Form 4's from one to eleven days late.

                          REPORT OF THE AUDIT COMMITTEE

The Audit Committee oversees Data I/O's financial reporting process on behalf of
the  Board of  Directors.  Management  has the  primary  responsibility  for the
consolidated  financial  statements  and the  reporting  process,  including the
systems of internal  controls.  Audit  Committee  members  are not  professional
accountants, or auditors and their functions are not intended to duplicate or to
certify the activities of management or the independent  auditors. In fulfilling
its oversight responsibilities,  the Committee reviewed the audited consolidated
financial statements in the Annual Report (Form 10-K) with management, including
a  discussion  of the quality,  not just the  acceptability,  of the  accounting
principles,  the  reasonableness  of significant  judgments,  and the clarity of
disclosures in the financial statements.

The Committee  reviewed with the independent  auditors,  who are responsible for
expressing an opinion on the conformity of those audited consolidated  financial
statements with accounting  principles  generally accepted in the United States,
their  judgments as to the quality,  not just the  acceptability,  of Data I/O's
accounting  principles and such other matters as are required to be discussed by
SAS 61 with the  Committee  under  generally  accepted  auditing  standards.  In
addition,  the  Committee  has  discussed  with  the  independent  auditors  the
auditors' independence from management and Data I/O including the matters in the
written  disclosures  and the letter  provided  by the  independent  auditors as
required by the Independence Standards Board and considered the compatibility of
nonaudit services with the auditors' independence.

The Committee  discusses with Data I/O's independent  auditors the overall scope
and plans for their respective  audits. The Committee meets with the independent
auditors,  with and without management  present, to discuss the results of their
examinations, their evaluations of Data I/O's internal controls, and the overall
quality of Data I/O's  financial  reporting.  The  Committee  held five meetings
during 2004.

In  reliance on the reviews and  discussions  referred to above,  the  Committee
recommended  to the Board of  Directors  (and the Board has  approved)  that the
audited  consolidated  financial  statements  be included  in Data I/O's  Annual
Report  (Form  10-K) for the year ended  December  31,  2004 for filing with the
Securities  and Exchange  Commission.  The Committee has selected Grant Thornton
LLP as Data I/O's auditors for the current year.

Respectfully submitted,

AUDIT COMMITTEE

Daniel A. DiLeo
Steven M. Quist
William R. Walker

March 21, 2005

                    PRINCIPAL ACCOUNTANT'S FEES AND SERVICES

Audit  Fees:  Aggregate  fees  billed  by Grant  Thornton  LLP for  professional
services  rendered for the audit of Data I/O's financial  statements for each of
the years  ended  December  31,  2003 and 2004 and for  review of the  financial
statements included in each of Data I/O's Form 10-Q, were approximately $132,600
and $151,600, respectively.

Audit Related Fees:  Aggregate  fees billed for each of the years ended December
31, 2003 and 2004 for assurance and related  services by Grant Thornton LLP that
are reasonably  related to the  performance of the audit or review of Data I/O's
financial statements that are not reported under the caption "Audit Fees" above,
including pension plan audit, S-8 related services,  audit committee  attendance
and accounting treatment consultations,  were approximately $12,200 and $13,800,
respectively.

Tax Fees:  Aggregate  fees billed for each of the years ended  December 31, 2003
and 2004 for  professional  services  rendered  by  Grant  Thornton  LLP for tax
compliance,  tax  advice,  tax  examination  support,  and  tax  planning,  were
approximately $8,350 and $3,000, respectively.

All Other Fees:  Aggregate  fees billed for each of the years ended December 31,
2003 and 2004 for all other products and services provided by Grant Thornton LLP
that are not  otherwise  disclosed  above,  including  consultations  on foreign
business practices and liquidation of a foreign  subsidiary,  were approximately
$6,225 and $4,400 for 2003 and 2004, respectively.

Policy on Pre-Approval  by Audit Committee of Services  Performed by Independent
Auditors

The Audit  Committee's  policy  is to  pre-approve  all  audit  and  permissible
non-audit  services  provided by the  independent  auditors.  These services may
include audit  services,  non-audit  services,  tax services and other services.
Pre-approval is detailed as to the particular service or category of service and
is subject to a specific engagement authorization.

During the year,  circumstances may arise when it may become necessary to engage
the  independent  auditors  for  additional  services  not  contemplated  in the
original pre-approval. In those circumstances, the Audit Committee has delegated
pre-approval  authority to the Chair of the Audit  Committee for those instances
when pre-approval is needed prior to a scheduled Audit Committee meeting.  These
additional  approvals  should be reported at the next scheduled  Audit Committee
meeting.

For 2004, all services provided by the independent auditors were pre-approved.

             REPORT OF COMPENSATION COMMITTEE ON ANNUAL COMPENSATION

The  Compensation  Committee  of the Board of  Directors  (the  "Committee")  is
composed entirely of independent outside directors. The Committee is responsible
for setting and  administering the policies which govern all of the compensation
programs of Data I/O.  Executive  officers of Data I/O are eligible for the same
benefits as other Data I/O employees.

The Committee has  established a compensation  plan for executive  officers with
three components:  annual base salary, annual management incentive compensation,
and long-term stock options.  Each of these components is described below.  This
executive officer  compensation  plan is evaluated  annually by the Committee by
reviewing Data I/O's overall financial performance, individual executive officer
performance, and executive officer total compensation compared with other public
companies  approximately  the same  size as Data  I/O,  located  in the  Pacific
Northwest and in the United States.

Annual Base Salary Structure.  The Committee establishes a base salary structure
for each executive  officer  position.  This structure defines the salary levels
and the relationship of salary to total cash compensation. The Committee reviews
the salary  structure  periodically  based on surveys  of  compensation  paid to
executives  performing similar duties with public companies of approximately the
same  size as Data I/O,  located  in the  Pacific  Northwest  and in the  United
States.  This group was selected as it is believed to be  representative  of the
companies with which Data I/O competes for key employees.

The Committee's objective is to maintain a salary structure which, when combined
with annual incentive compensation,  provides Data I/O's executive officers with
total cash  compensation  which is near the market  median for  executives  with
similar  responsibilities,  experience  and  ability.  In light of the  previous
economic situation, we froze executive management salaries at the 2001 level and
deferred  consideration of normal annual adjustments  through the end of 2004 as
part of Data I/O's short-term cost control efforts.  During 2004, we believe the
executive officer group as a whole received cash  compensation,  which according
to the surveys described above, was within the second and third quartiles of the
aggregate annual base salary,  but below the aggregate median cash compensation,
paid to officers in similar positions at similar-sized public companies.

In January 2005, Data I/O increased the annual base salary for our two Executive
officers to $290,000 for the President and Chief Executive  Officer and $162,500
for the Vice President/Chief Financial Officer /Secretary/Treasurer. We believe,
based on the surveys described above, that these annual base salaries are now at
a more appropriate  level within the second and third quartiles of the aggregate
annual base salary paid to officers in similar positions at similar-sized public
companies.

Management Incentive  Compensation Plan ("MICP"). The MICP offers each executive
officer  a   performance-based   opportunity  to  earn  additional  annual  cash
compensation  in an amount tied to a percentage of the executive  officer's base
salary. The Committee's  objective in setting executive MICP percentages and the
formulas for MICP payout is to pay above industry average total compensation for
better than expected or industry average  historical  financial  performance and
below industry average  compensation for worse than expected or industry average
financial  historical  performance.  The percentages of base salary targeted for
MICP payout ("the Guideline") for executives for a given year are established by
the Committee early in the year. The 2004 MICP Guideline for executive  officers
was 40% of base salary.

The actual MICP payout to an executive officer, in relation to his Guideline for
2004,  was a  function  of three  measures  of Data  I/O's  pre-tax  profit:  1)
quarterly profit; 2) growth in annual profit;  and 3) record annual profit.  The
Committee  believes that these  measures of key  activities  for Data I/O during
2004 will affect near-term and long-term  shareholder value. A greater or lesser
percentage of Guideline is to be paid based on Data I/O's actual pre-tax profit.

MICP payouts for 2004 were based on the  achievement  of a certain  level of the
combined  measures  described above.  For 2004,  payouts were made for quarterly
profit,  but not for  growth in annual  profit or for record  profit.  Executive
officers  received an MICP payout in March 2005 of 7% of Guideline for 2004. See
"Summary Annual Compensation Table."

Stock Option Plan. The Committee  approves grants under the Data I/O Corporation
1986  Employee  Stock Option Plan, as amended and restated (the "1986 Plan") and
the 2000 Plan  (collectively  "the Plans").  These are Data I/O's only long-term
incentive  plans.  The  primary  purpose  of the Plans is to make a  significant
element of executive pay a reward for taking actions which maximize  shareholder
value over time. The Committee  grants options based primarily on its perception
of the executive's ability to affect future shareholder value and secondarily on
the competitive  conditions in the market for exceptionally  talented executives
who typically command  compensation  packages which include a significant equity
incentive.  All options granted to the President and Chief Executive Officer and
any other executive officer in 2004 were based on these criteria.

In the electronics industry,  stock options represent a key compensation element
which attracts, retains and motivates exceptional executives. Accordingly, total
outstanding  options as a percentage of outstanding shares tends to be higher in
electronics  than  in  other  industries.  As of the  Record  Date,  Data  I/O's
outstanding  options  represented  approximately  14.18% of outstanding  shares,
which Data I/O  believes is slightly  below the average  within the  electronics
industry.

Historically, all options granted by Data I/O have been granted with an exercise
price equal to the fair market  value of Data I/O's  Common Stock on the date of
grant  and,  accordingly,  will  only  have  value  if Data  I/O's  stock  price
increases.  Options granted to employees during 2000, 2001, 2002, 2003, and 2004
under the 2000 Plan become  exercisable  at a rate of 6.25% per quarter,  except
for a 50,000 option grant to Mr. Hume as described  below.  All options  granted
during 1999, except those granted in January 1999, become  exercisable at a rate
of 25% per year. Options granted in January 1999 become exercisable at a rate of
12.5% per quarter.  All 1998 options granted during and after August 1998 become
exercisable  at a rate of 12.5% per quarter.  All  outstanding  options  granted
prior to August 1998 become  exercisable  at a rate of 25% per year.  Options to
Directors vest quarterly over a three year period.

Fifty thousand  options  granted to Mr. Hume under the 1986 Plan during 2000 are
subject to 4-year cliff vesting and become  exercisable at the end of the 4-year
period,   with   acceleration   provisions   included  for  earlier  vesting  if
predetermined  revenue and profit  targets are  achieved.  The targets  were not
achieved  for 2000,  2001,  2002,  2003,  or 2004,  so none of the  acceleration
provisions will apply.

All grants are subject to  acceleration  of vesting in  connection  with certain
events  leading  to a change in  control of Data I/O or at any other time at the
discretion  of the  Committee.  All options  granted to  executive  officers are
issued in tandem with limited stock appreciation  rights ("SARs"),  which become
exercisable only in the event of a change in control of Data I/O. See "Change in
Control and Severance Arrangements."

For additional  information concerning the number of new options granted in 2004
to the Chief  Executive  Officer and other executive  officers,  see "Option/SAR
Grants in the Last Year."

Performance  Evaluation.  The base salary of each executive  officer is reviewed
annually by the President and Chief Executive Officer. This is done on the basis
of a review  by the  President  and  Chief  Executive  Officer,  evaluating  the
executive's prior year performance against their individual job responsibilities
and attainment of corporate objectives and Data I/O's financial performance.  In
developing executive  compensation  packages to recommend to the Committee,  the
President and Chief Executive Officer considers, in addition to each executive's
prior  year  performance,  the  executive's  long-term  value to Data  I/O,  the
executive's  pay relative to that for comparable  surveyed jobs, the executive's
experience  and ability  relative to  executives in similar  positions,  and the
current year increases in executive compensation projected in industry surveys.

The  Committee  then  reviews  the  President  and  Chief  Executive   Officer's
recommendations  for executive  officers' total  compensation and approves final
decisions on pay for each  executive  officer  based on the  President and Chief
Executive  Officer's  summary of the  performance  evaluations  and on the other
criteria  and survey  data  described  above.  In this  process,  the  Committee
consults extensively with Data I/O's President and Chief Executive Officer.

The Committee meets annually  without the President and Chief Executive  Officer
to evaluate his performance and to develop a recommendation for his compensation
for the coming year. In addition to reviewing Data I/O's  financial  performance
for the  prior  year,  the  Committee  reviews  compensation  surveys  for chief
executive  officers in similar  companies and the President and Chief  Executive
Officer's individual performance,  including development and execution of short-
and long-term  strategic  objectives,  Data I/O revenue and  profitability,  the
achievement of which is expected to increase  shareholder  value.  The Committee
then  approves  base  salary  and  MICP  percentage  changes  for all  executive
officers.

The Committee  determined the compensation  package,  including  salary,  bonus,
stock option  grants,  and other  benefits for Frederick R. Hume,  President and
Chief  Executive   Officer,   based  on  the   Committee's   perception  of  his
qualifications for the position, his ability to affect future shareholder value,
compensation surveys (as noted above under "Annual Base Salary Structure"),  and
the competitive conditions in the market.

Data I/O has entered into agreements (the "Severance  Agreements")  with certain
executive  officers  whereby  such  individuals  would be  entitled  to  receive
payments if they are terminated  without cause or resign with good reason within
specified periods following the occurrence of certain events deemed to involve a
change in control of Data I/O. These Severance Agreements expired on January 30,
2004,  but were  extended  for  three  years on April  22,  2004 by the Board of
Directors. See "Change in Control and Severance Arrangements." Under the Omnibus
Budget  Reconciliation Act of 1993, the federal income tax deduction for certain
types of  compensation  paid to the chief  executive  officer and the four other
most highly compensated executive officers of publicly held companies is limited
to $1 million  per  officer per year  unless  such  compensation  meets  certain
requirements.  The  Committee is aware of this  limitation  and believes that no
compensation paid by Data I/O during 2004 will exceed the $1 million limitation,
except  possibly  a  portion  of the  sums  payable  pursuant  to the  Severance
Agreements, if paid.

Respectfully submitted,

COMPENSATION COMMITTEE

Glen F. Ceiley
Daniel A. DiLeo
William R. Walker

March 21, 2005




                           SUMMARY COMPENSATION TABLE

The following table shows  compensation  paid by Data I/O for services  rendered
during  years  2004,  2003,  and 2002 to all  persons  who  served  as the Chief
Executive  Officer  in 2004 and the  other  most  highly  compensated  executive
officer of Data I/O at  December  31,  2004,  whose  salary  and bonus  exceeded
$100,000 in 2004.



                                                                          Long-Term
                                                                         Compensation
                                             Annual Compensation             Awards
                                         ----------------------------------------------
                                                                          Securities
                                                                          Underlying         All
Name and                                                                   Options/         Other
Principal                                   Salary            Bonus           SARs       Compensation
Position                          Year       ($)          ($) (1)(2)        (#) (3)        ($) (4)
----------------------------------------------------------------------------------------------------------
                                                                               
Frederick R. Hume                 2004      250,000           7,443         50,000          9,806
President                         2003      250,000          74,148         50,000          9,806
Chief Executive Officer           2002      250,000               0         50,000         10,322

Joel S. Hatlen                    2004      157,500           4,689         17,500          7,236
Vice President /                  2003      157,500          54,113         25,000          8,114
Chief Financial Officer           2002      157,500               0         25,000          7,315
/Secretary/ Treasurer

---------------------------------
(1)  2004 amount represents amounts earned under MICP in 2004 and paid in 2005.
(2)  2003 amount  represents  amounts earned under MICP in 2003 and paid in 2004
     and a discretionary  bonus of $20,000 that was authorized and paid in March
     2003.
(3)  All options  granted to  executive  officers  are granted in tandem with an
     equal number of SARs.  SARs are only  exercisable  upon the  occurrence  of
     certain  events leading to a change in the control of Data I/O. See "Change
     in Control and Severance Arrangements."
(4)  These amounts  represent Data I/O's  contributions to Data I/O's 401K Plan,
     payment for excess  unused  benefit  credits,  and its payment of term life
     insurance premiums on behalf of the executive.



                             OPTION/SAR GRANTS TABLE
                       Option/SAR Grants in the Last Year

The following table sets forth certain information regarding stock option grants
to Data  I/O's  Chief  Executive  Officer  and  Data  I/O's  other  most  highly
compensated executive officer during the year ended December 31, 2004.



                           Number of       Percent                                  Potential Realizable Value
                           Securities      of Total                                 at Assumed Annual Rates of
                           Underlying    Options/SARs     Exercise                   Stock Price Appreciation
                          Options/SARs    Granted to         or                         for Option Term (4)
                                                                                    ----------------------------
                            Granted       Employees      Base Price     Expiration    0%      5%        10%
Name                        (#) (1)        in Year     ($/Sh) (2)(3)       Date      ($)      ($)       ($)
----------------------------------------------------------------------------------------------------------------
                                                                                   
Frederick R. Hume          50,000 (5)        15.97%        2.93         06/17/10      0     49,824    113,034

Joel S. Hatlen             17,500  (5)        5.59%        2.93         06/17/10      0     17,438     39,562


(1)  An equal  number of SARs are  granted  in tandem  with  options  granted to
     executive  officers.  SARs are  exercisable  only  upon the  occurrence  of
     certain  events leading to a change in the control of Data I/O. See "Change
     in Control and Severance Arrangements."
(2)  Under  the  terms of the 1986  Plan and the  2000  Plan,  the  Compensation
     Committee retains  discretion,  subject to plan limits, to modify the terms
     of and to reprice outstanding options.
(3)  The exercise price may be paid by delivery of already owned shares, subject
     to certain conditions.
(4)  Potential  realizable  value is based on an assumption that the stock price
     of the  Common  Stock  appreciates  at the annual  rate  shown  (compounded
     annually)  from the date of grant until the end of the option  term.  These
     numbers are calculated  based on SEC  requirements  and do not reflect Data
     I/O's estimate of future stock price growth.
(5)  All new options granted in 2004 become exercisable  commencing three months
     after grant date,  with 6.25% of the shares  becoming  exercisable  at that
     time and an additional  6.25% of the shares  becoming  exercisable  on each
     successive quarter after the grant date, with full vesting occurring on the
     fourth anniversary of such date. Options which have been outstanding for at
     least six months will become  exercisable  in full upon the  occurrence  of
     certain  events  leading to a change in control of Data I/O. See "Change in
     Control and Severance Arrangements." Options expire six years from the date
     of grant,  subject to earlier  termination if the optionee's  employment is
     terminated.


                OPTIONS/SAR EXERCISES AND YEAR-END OPTION VALUES
             TABLE Aggregated Options/SAR Exercises in Last Year and
                           Year-End Option/SAR Values

The following table sets forth certain  information  regarding  option exercises
and year-end option values for Data I/O's Chief Executive Officer and Data I/O's
other most highly compensated officer during the year ended December 31, 2004.



                                                           # of Securities Underlying         Value of Unexercised
                                  Shares                         Options/SARs at           In-the-Money Options/SARs
                                Acquired on     Value           December 31, 2004             at December 31, 2004
                                 Exercise     Realized               (#) (2)                        ($) (3)
                                                         ---------------------------------------------------------------
Name                                (#)        ($) (1)     Exercisable / Unexercisable     Exercisable / Unexercisable
------------------------------------------------------------------------------------------------------------------------
                                                                                        
Frederick R. Hume                    0            0           306,250  /     93,750           332,438  /     94,063

Joel S. Hatlen                       0            0            80,188  /     40,312            67,342   /    46,769


(1)  Market value of underlying  securities at exercise date, minus the exercise
     or base price of in-the-money options/SARs.
(2)  Future  exercisability is subject to vesting and the optionee  remaining in
     the employment of Data I/O. In addition,  all options are granted in tandem
     with an equal number of SARs. SARs are only exercisable upon the occurrence
     of  certain  events  leading to a change in the  control  of Data I/O.  See
     "Change in Control and Severance Arrangements."
(3)  This value is  calculated  by  multiplying  the market  value of the Common
     Stock at December 31, 2004, which was $2.97 as quoted on the NASDAQ Market,
     less the exercise or base price by the number of in-the-money  options/SARs
     held.  If the  number  is  zero,  the  aggregate  value of the  options  is
     out-of-the-money.



                      EQUITY COMPENSATION PLAN INFORMATION

The following table gives  information about Data I/O's Common Stock that may be
issued upon the exercise of options and rights under all of Data I/O's  existing
equity compensation plans as of December 31, 2004.



                                                                                            
                                                                                               (c) Number of securities
                                     (a) Number of securities     (b) Weighted-                 remaining available for
                                      to be issued upon the       average exercise              future issuance under
                                      exercise of outstanding    price of outstanding          equity compensation plans
                                       options, warrants and      options, warrants             (excluding securities
                                             rights                   and rights                reflected in column (a))
                                    -------------------------    -----------------------     ----------------------------
                                                                                           
Equity compensation plans
approved by the security holders (1)(3)
                                           1,459,779                     $2.25                         754,352

Equity compensation plans not
approved by the security holders (2)
                                              10,000                     $5.19                            0
-----------------------------------


(1)  Represents  shares of Data I/O's Common Stock issuable pursuant to our 2000
     Plan, 1986 Plan, 1992 Employee Stock Purchase Plan, and Director Fee Plan.
(2)  Director  option grant  represents a one-time  option grant to Directors in
     May  1998  prior  to  shareholder  approval  of  an  option  plan  covering
     Directors.
(3)  Stock Appreciation  Rights ("SAR") Plan provides that directors,  executive
     officers  or holders of 10% or more of Data I/O's  Common  Stock have a SAR
     with respect to each exercisable  option.  While the plan has been approved
     by the  security  holders,  no amounts  are  included  in columns a, b or c
     relating to the SAR.



                      SHAREHOLDER RETURN PERFORMANCE GRAPH

Shown below is a line-graph  comparing  cumulative total  shareholder  return on
Data I/O Common  Stock for each of the last five years  against  the  cumulative
total return for the Russell 2000 Index and the S&P 500  Information  Technology
Sector. This cumulative return includes the reinvestment of cash dividends.




                                            COMPARATIVE FIVE-YEAR TOTAL RETURNS
                                       Data I/O Corporation, Russell 2000, and S&P 500
                                         Information Technology Sector (Performance
                                          results as of year end through 12/31/04)

                                                      1999      2000      2001     2002      2003      2004
                                                                                     
      DAIO                                            $100      $73       $56       $33      $129      $108
      Russell 2000                                    $100      $97       $99       $79      $116      $138
      S&P 500 Information Technology Sector           $100      $59       $44       $27       $40       $41


(1)  Assumes $100  invested at the close of trading on December 31, 2000 in Data
     I/O  Common  Stock,  in  the  Russell  2000  Index  and  in  the  S & P 500
     Information Technology Sector. Cumulative total return assumes reinvestment
     of dividends.

                  CHANGE IN CONTROL AND SEVERANCE ARRANGEMENTS

Options reported in the Option/SAR compensatory tables appearing above have been
granted  pursuant to the Plans.  Historically,  most options  granted  under the
Plans have been  granted  subject to a vesting  schedule of either 25% per year,
12.5% per quarter, or 6.25% per quarter. However, the Plans provide that options
which have been  outstanding for at least six months will become  exercisable in
full for the periods indicated: (i) for a period of 45 days beginning on the day
on which any person or group (with certain  exceptions)  becomes the  beneficial
owner of 25% or more of the  combined  voting  power of Data  I/O's  outstanding
securities,  unless such accumulation is previously  approved by a disinterested
majority of the Plan's administrators;  (ii) beginning on the date that a tender
or exchange offer by any person (with certain  exceptions) is first published or
sent or given,  and continuing  for so long as such offer remains open,  unless,
upon  consummation  thereof,  such person would be the beneficial  owner of less
than 30% of the shares of Common  Stock then  outstanding,  unless  such  tender
offer is approved by a  disinterested  majority  of the Board of  Directors;  or
(iii)  immediately  prior  to  consummation  of (a) any  merger,  consolidation,
reorganization  or other  transaction  pursuant  to which  persons  who hold the
outstanding Common Stock immediately prior to the transaction have less than 40%
of the combined voting power of the surviving  entity;  or (b) any sale,  lease,
exchange or other  transfer not in the ordinary  course of all or  substantially
all of Data I/O's assets. With any of the foregoing transactions,  Data I/O will
give each option holder notice 20 days prior to the proposed  consummation date,
and each option  holder will then be entitled to exercise  their options in full
or part at any time  prior  to  consummation  of such  transaction.  A  holder's
exercise  of  those  options  that  become  vested  only  as a  result  of  such
acceleration will be contingent upon consummation of such transaction.

In 1983,  Data I/O  adopted a SAR Plan which  allows the Board of  Directors  to
grant to each director,  executive officer or holder of 10% or more of the stock
of Data I/O a SAR with respect to certain  options  granted to these parties.  A
SAR has been granted in tandem with each option granted to an executive  officer
of Data I/O.  SARs  granted  which  have been held for at least six  months  are
exercisable  for a period of 20 days  following the  occurrence of either of the
following events: (i) the close of business on the day that a tender or exchange
offer by any person  (with  certain  exceptions)  is first  published or sent or
given if, upon consummation  thereof,  such person would be the beneficial owner
of 30% or more of the shares of Common Stock then outstanding;  or (ii) approval
by the shareholders of Data I/O (or, if later, approval by the shareholders of a
third party) of any merger,  consolidation,  reorganization or other transaction
providing  for the  conversion  or exchange of more than 50% of the  outstanding
shares of Data I/O's Common Stock into  securities of a third party, or cash, or
property, or a combination of any of the foregoing.

Data I/O entered into severance  agreements  (the "Severance  Agreements")  with
each of the following Executive officers on the following dates: Joel S. Hatlen,
Vice President, Chief Financial Officer,  Secretary, and Treasurer, in July 1998
and Frederick R. Hume,  President and Chief Executive Officer, in February 1999;
the term of these  agreements was extended on January 31, 2002 for a period of 2
years from that date.  These Severance  Agreements  expired on January 30, 2004,
but these  agreements  were extended  again for three years on April 22, 2004 by
the Board of Directors.  The respective  agreements with Messrs. Hatlen and Hume
provide for a lump sum payment to the officer upon  termination of the officer's
employment  by Data I/O without  cause or by the  officer for "good  reason" (as
defined in the Severance Agreements) 90 days prior and within one year following
a change of control of Data I/O.  The amount of the lump sum payment is equal to
a multiple of the  officer's  base salary at the time of  termination,  plus the
average bonus  received  during the last three full years the officer  served in
his or her present  position  (the  "base").  The guideline for the multiple for
each of the officers is one times the base. The size of the multiple declines on
a straight-line  basis  throughout the specified  period,  following a change in
control,  except  that the  multiple  is never  less than  one-half.  The amount
payable under the Severance Agreements for Messrs. Hatlen and Hume is subject to
reduction if the aggregate  present value of all payments received in connection
with a change in control  would  exceed  three times the  officer's  "annualized
includible  compensation",  as defined in Section 280G of the  Internal  Revenue
Code, for the executive officer's most recent five taxable years.

In  connection  with  execution of the Severance  Agreements,  Data I/O required
Messrs. Hatlen and Hume to sign a confidentiality and non-competition agreement,
which includes,  among other things, a restriction  against  competing with Data
I/O or  soliciting  employees  from  Data I/O for a  one-year  period  following
termination if the officer receives a payment under a Severance  Agreement.  The
Board of  Directors  believes  that the terms and  conditions  of the  Severance
Agreements are in the best interest of Data I/O because the Severance Agreements
will enable our executive officers to continue to focus on activities  providing
for the maximum long-term value to Data I/O's shareholders, even when faced with
the possible  change of control of Data I/O or termination of their  employment.
In addition,  each of the executive  officers named in the Summary  Compensation
Table  have  signed  Data I/O's form of offer  letter  and have  entered  into a
Confidentiality   and   Intellectual    Property   Assignment   Agreement   (the
"Confidentiality  Agreement")  with Data I/O.  These offer  letters  specify the
terms of  employment,  including  annual  base pay,  MICP  participation,  stock
options provided,  if any, and that employment is at will. In January 2005, Data
I/O increased the annual base salary for our two executive  officers to $290,000
for the  President  and  Chief  Executive  Officer  and  $162,500  for the  Vice
President/Chief  Financial   Officer/Secretary/Treasurer.   The  Confidentiality
Agreements  also  provide  that  employment  is  at  will.  The  Confidentiality
Agreements also provide that executive  officers shall keep certain  information
confidential during and after employment and shall not solicit employees of Data
I/O for one year following termination of their employment.



        PROPOSAL 2: RATIFICATION OF THE CONTINUED APPOINTMENT OF AUDITORS

The Board of  Directors  requests  that the  shareholders  ratify the  continued
appointment  of Grant Thornton LLP to serve as Data I/O's  independent  auditors
for calendar year 2005. Grant Thornton LLP examined the  consolidated  financial
statements of Data I/O for the year ended December 31, 2004.  Representatives of
Grant Thornton LLP will be present at the Annual Meeting to make a statement if
they desire to do so and to respond to questions by shareholders.
                                 
                                 OTHER BUSINESS

As of the  date of this  Proxy  Statement,  Data I/O is not  aware of any  other
business to be acted upon at the Annual Meeting.  If any other business  calling
for a vote of the shareholders is properly presented at the meeting, the holders
of the proxies  will vote or refrain from voting in  accordance  with their best
judgment.

                  SHAREHOLDER NOMINATIONS AND PROPOSALS FOR THE
                       2006 ANNUAL MEETING OF SHAREHOLDERS

Data I/O's Bylaws provide that advance notice of nominations for the election of
directors  at a meeting  of  shareholders  must be  delivered  to or mailed  and
received  by Data I/O on or before  February  18,  2006 in the case of an annual
meeting of shareholders, and in the case of a special meeting of shareholders to
elect  directors,  the close of business on the 10th day  following  the date on
which  notice of such  meeting is first given to  shareholders.  The Bylaws also
provide that advance  notice of proposals to be brought before an Annual Meeting
by a  shareholder  must be submitted  in writing and  delivered to or mailed and
received  by Data I/O not later than 90 days prior to the date one year from the
date immediately preceding the Annual Meeting of Shareholders.

To qualify as an "eligible"  shareholder,  a shareholder must have been a record
or  beneficial  owner of at least one  percent  (1%) of Data  I/O's  outstanding
Common  Stock,  or  shares  of Common  Stock  having a market  value of at least
$2,000,  for a period of at least one (1) year prior to submitting the proposal,
and the  shareholder  must continue to hold the shares through the date on which
the meeting is held.

Each notice of a nomination or proposal of business  must  contain,  among other
things:  (i) the name and  address of the  shareholder  who  intends to make the
nomination or proposal;  (ii) a representation  that the shareholder is a holder
of record of stock of Data I/O  entitled to vote at such  meeting and intends to
appear in person or by proxy at the  meeting to  nominate  the person or persons
specified  in the notice or to vote at the  meeting  for the  proposal;  (iii) a
description of all  arrangements or  understandings  between the shareholder and
each  nominee and any other  person or persons  (naming  such person or persons)
pursuant  to  which  the  nomination  or  nominations  are  to be  made  by  the
shareholder and any material  interest of such shareholder in any proposal to be
submitted to the meeting;  (iv) such other information regarding each nominee or
proposal as would be required to be included in a proxy statement filed pursuant
to the proxy  rules of the SEC;  and (v) with  respect to the  nominations,  the
consent of each nominee to serve as a director of Data I/O if elected.

A copy of the full text of the  provisions  of Data I/O's  Bylaws  dealing  with
shareholder  nominations  and  proposals is available to  shareholders  from the
Secretary of Data I/O upon written request.

SEC rules establish a deadline for submission of shareholder  proposals that are
not  intended  to be  included in Data I/O's  proxy  statement  with  respect to
discretionary voting (the "Discretionary Vote Deadline"). The Discretionary Vote
Deadline  for the 2006 Annual  Meeting is February 18,  2006.  If a  shareholder
gives notice of such a proposal  after the  Discretionary  Vote  Deadline,  Data
I/O's proxy holders will be allowed to use their discretionary  voting authority
to vote against the  shareholder  proposal when and if the proposal is raised at
the 2006 Annual Meeting.

Shareholders  who intend to have a proposal  considered  for  inclusion  in Data
I/O's proxy  materials for  presentation  at the 2006 Annual Meeting must submit
the proposal to Data I/O no later than December 1, 2005. Shareholders who intend
to present a proposal  at the 2006  Annual  Meeting  without  inclusion  of such
proposal in Data I/O's proxy  materials  are required to provide  notice of such
proposal to Data I/O no later than  February  18,  2006.  Data I/O  reserves the
right to reject,  rule out of order, or take appropriate  action with respect to
any proposal that does not comply with these and other applicable  requirements,
but only after Data I/O has notified the  shareholder(s)  who have submitted the
proposal of the problem and such  shareholder(s) have failed to correct it. This
obligation  to  notify  the  appropriate  shareholder(s)  does not  apply to the
failure to submit such proposal prior to the deadlines discussed above.

                             SOLICITATION OF PROXIES

The  proxy  accompanying  this  Proxy  Statement  is  solicited  by the Board of
Directors.   Proxies  may  be  solicited  by  officers,  directors  and  regular
supervisory  and executive  employees of Data I/O, none of whom will receive any
additional  compensation for their services. In addition, Data I/O may engage an
outside proxy  solicitation firm to render proxy  solicitation  services and, if
so,  will pay a fee for such  services.  Solicitations  of  proxies  may be made
personally,  or by mail,  telephone,  telegraph or messenger.  Data I/O will pay
persons  holding  shares  of  Common  Stock  in their  names or in the  names of
nominees,  but not owning such shares  beneficially,  such as brokerage  houses,
banks and other fiduciaries,  for the expense of forwarding soliciting materials
to their  principals.  All costs of solicitation of proxies will be paid by Data
I/O.

                                      By Order of the Board of Directors



                                      Frederick R. Hume
                                      President and Chief Executive Officer
Redmond, Washington
April 8, 2005



                                                                  Appendix A

                             AUDIT COMMITTEE CHARTER
            Adopted by the Board of Directors of Data I/O Corporation
                                February 8, 2005

Composition:

The audit committee shall be composed of three or more directors,  as determined
by the  board  of  directors.  Each of the  committee  members  shall  meet  the
independence  and  financial  literacy  requirements  of NASDAQ unless the Board
determines, to the extent permitted by NASDAQ rules, no more than one individual
who does not meet the independence requirements and who shall not serve for more
than two years would bring  valuable  financial or accounting  experience to the
committee.  In addition,  at least one of the members shall have past employment
experience in finance or accounting,  requisite  professional  certification  in
accounting,  or any other  comparable  experience or background which results in
the  individual's  financial  sophistication,  including  being or having been a
chief executive  officer,  chief financial  officer or other senior officer with
financial oversight responsibilities. Unless the board of directors designates a
chair,  the  committee  members  may appoint  their own chair by  majority  vote
provided,  however,  that a committee  member who does not meet the independence
requirements of NASDAQ shall not serve as chair.

Statement of Policy:

The audit  committee of the board of directors  assists the board in  fulfilling
their oversight responsibility to the shareholders,  potential shareholders, the
investment community,  and others relating to the Company's financial statements
and the financial  reporting  process,  the systems of internal  accounting  and
financial controls,  and the annual independent audit of the Company's financial
statements.  In so doing, it is the  responsibility of the committee to maintain
free and open  communication  among the  committee,  independent  auditors,  and
management of the Company.  In discharging  its oversight role, the committee is
empowered to investigate any matter brought to its attention with full access to
all books,  records,  facilities,  and personnel of the Company and the power to
retain  outside  counsel or other  experts for this  purpose.  The Company shall
provide for appropriate funding, as determined by the committee,  for payment of
compensation to the independent  auditor for the purpose of rendering or issuing
an audit report and to any advisors employed by the committee.

Responsibilities:

1.   Appoint,  oversee,  evaluate  and approve  compensation  for the  company's
     independent  auditor and, if so determined by the audit committee,  replace
     the independent  auditor.  Establish policies and procedures for the review
     and pre-approval by the committee of all auditing  services and permissible
     non-audit  services  (including the fees and terms thereof) to be performed
     by the independent auditor.

2.   Ensure the receipt of, and evaluate, the written disclosures and the letter
     that the independent  auditor submits to the audit committee  regarding the
     auditor's  independence  in accordance  with  Independence  Standards Board
     Standard No. 1. Discuss  such reports with the auditor and  recommend  that
     the board of directors take appropriate  action to address issues raised by
     such evaluation.

3.   Discuss with the independent  auditor the matters  required to be discussed
     by SAS 61, as it may be modified or supplemented.

4.   Instruct management,  the independent auditor and any internal auditor that
     the committee expects to be informed if there are any subjects that require
     special  attention or if they  perceive any  significant  weaknesses in the
     company's information and reporting systems.

5.   Meet with  management  and the  independent  auditor to discuss  the annual
     financial statements and the report of the independent auditor thereon, and
     to discuss  significant issues encountered in the course of the audit work,
     including  restrictions  on the scope of  activities,  access  to  required
     information and the adequacy of internal financial controls.

6.   Review  the  management  letter  delivered  by the  independent  auditor in
     connection with the audit.

7.   Meet quarterly with management and the  independent  auditor to discuss the
     quarterly and annual  financial  statements prior to the filing of the Form
     10Q and Form 10K; provided that this responsibility may be delegated to the
     chair of the audit committee.

8.   Meet at  least  once  each  year in  separate  executive  session  with the
     independent  auditor to discuss  matters that any of them or the  committee
     believes could significantly  affect the financial statements and should be
     discussed privately.

9.   Have such meetings with management  and/or the  independent  auditor as the
     committee deems appropriate to discuss significant financial risk exposures
     facing the company and  management's  plans for monitoring and  controlling
     such exposures.

10.  Review  significant  changes to the  company's  accounting  principles  and
     practices proposed by the independent auditor or management.

11.  Provide minutes of audit committee meetings to the board of directors,  and
     report to the board of directors on any  significant  matters  arising from
     the committee's work.

12.  At least  annually,  review and reassess this charter and, if  appropriate,
     recommend proposed changes to the board of directors.

13.  Periodically  review and reassess the  effectiveness of the audit committee
     and recommend any changes to the board of directors.

14.  Prepare the report  required by the rules of the  Securities  and  Exchange
     Commission to be included in the company's annual proxy statement.

15.  Review and approve all related-party or  conflict-of-interest  transactions
     (as defined by the relevant  NASDAQ listing  requirements)  involving other
     members of the board of directors or the company's senior management.

16.  Establish   procedures  for  the  receipts,   retention  and  treatment  of
     complaints   received  by  the  company  regarding   accounting,   internal
     accounting controls,  or auditing matters, and the confidential,  anonymous
     submission by employees of concerns  regarding  questionable  accounting or
     auditing matters.

17.  Establish  policies for the hiring of employees and former employees of the
     independent auditor.

18.  In the  performance  of its  responsibilities,  the audit  committee is the
     representative of the shareholders.  However,  it is not the responsibility
     of the audit committee to plan or conduct audits,  or to determine  whether
     the  company's  financial  statements  are  complete  and  accurate  or  in
     accordance with generally accepted accounting principles.




 PROXY

           THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS
                              DATA I/O CORPORATION

The undersigned  hereby appoints Frederick R. Hume, and Joel S. Hatlen, and each
of them as proxies, each with full power of substitution,  to represent and vote
for and on behalf of the undersigned,  as designated below, the number of shares
of common stock of Data I/O Corporation  that the undersigned  would be entitled
to vote if personally  present at the annual meeting of  shareholders to be held
on May 19, 2005 or at any adjournment thereof. The undersigned directs that this
proxy be voted as indicated on the reverse side hereof.

COMMENTS/ADDRESS CHANGE: Please mark comments/address change box (Continued, and
to be marked, dated and signed on on reverse side. reverse side.)

This proxy, when properly executed, will be voted in the manner directed on this
proxy card.  The Board of  Directors  recommends a vote FOR all nominees and FOR
ratification of the continued appointment of Grant Thornton LLP as the Company's
independent  auditors.  If no specification  is made, all shares  represented by
this proxy will be voted FOR all of said nominees,  and FOR  ratification of the
continued  appointment  of  Grant  Thornton  LLP  as the  Company's  independent
auditors,  and will be voted in accordance with the discretion of the proxies on
all other matters which may come before the meeting or any adjournment thereof.

                            ^ FOLD AND DETACH HERE ^



Please mark your votes as indicated in this example |X|

1.   Election of Directors
     (INSTRUCTION: To withhold authority to vote for any individual nominee,
     strike a line through the nominee's name in the list below.)
                                                                  
       01 Glen F. Ceiley          04 Frederick R. Hume                        
       02 Daniel A. Dileo         05 Edward D. Lazowska                       
       03 Paul A. Gary            06 Steven M. Quist                          
                                  07 William R. Walker

FOR all nominees listed at left (except as marked to the contrary at left). |_|

WITHHOLD ALL AUTHORITY to vote for all nominees listed at left. |_|

2.   Proposal to ratify the continued  appointment  of Grant Thornton LLP as the
     Company's independent auditors. 
                                                                              
     FOR        AGAINST      ABSTAIN                                          
                                                                              
     |_|          |_|          |_|   

3.  In their discretion, the holders of this proxy are authorized to vote
    upon such other business as may properly come before the meeting or any
    adjournments thereof.

                            COMMENTS/ADDRESS CHANGE
                    Please mark this box if you have written
                  comments/address change on the reverse side.  |_|
                                                                              
                                                                              
The undersigned hereby revokes any proxy or proxies heretofore you
given for such shares and ratifies all that said proxies or their have
substitutes may lawfully do by virtue hereof.
                                                                              
                                                                              
Signature(s) _____________________________________  Date _____________________


                            ^ FOLD AND DETACH HERE ^