POWER OF ATTORNEY



   Know all by these presents, that the undersigned hereby constitutes and

appoints each of Frederick R. Hume and Joel S. Hatlen,or either of them

individually, the undersigned's true and lawful attorney-in-fact to:



1  execute for and on behalf of the undersigned, in the undersigned's

capacity as an officer, director and/or shareholder of Data I/O

Corporation (the Company), Forms 3, 4 and 5 in accordance with

Section 16(a) of the Securities Exchange Act of 1934 and the rules

thereunder;



2  do and perform any and all acts for and on behalf of the undersigned

 that may be necessary or desirable to complete and execute any such

Forms 3, 4 or 5 and timely file such form with the United State

Securities and Exchange Commission and any stock exchange or

similar authority; and



3  take any other action of any type whatsoever in connection with the

foregoing that, in the opinion of such attorney-in-fact,

may be of benefit to, in the best interest of, or legally required by,

the undersigned, it being understood that the documents executed by

such attorney-in-fact on behalf of the undersigned pursuant to this

power of attorney shall be in such form and shall contain such

terms and conditions as such attorney-in-fact may approve in such

attorney-in-fact's discretion.



   The undersigned hereby grants to each such attorney-in-fact

full power and authority to do and perform any and every act and

thing whatsoever requisite, necessary, or proper to be done in the

exercise of any of the rights and powers herein granted, as fully

to all intents and purposes as the undersigned might or could do

if personally present, with full power of substitution or revocation,

hereby ratifying and confirming all that such attorney-in-fact, or

such attorney-in-fact's substitute or substitutes, shall lawfully

do or cause to be done by virtue of this power of attorney and the

rights and powers herein granted.  The undersigned acknowledges that

the foregoing attorney-in-fact, in serving in such capacity at the

request of the undersigned, are not assuming, nor is the Company

assuming, any of the undersigned's responsibilities to comply with

Section 16 of the Securities Exchange Act of 1934.



     This power of attorney shall remain in full force and effect

until the undersigned is no longer required to file Forms 3, 4 and

5 with respect to the undersigned's position with, or holdings of

and transactions in securities issued by the Company, unless

earlier revoked by the undersigned in a signed writing delivered

to the foregoing attorneys-in-fact.



IN WITNESS WHEREOF, the undersigned has caused this Power of

Attorney to be executed as of this 4th day of April, 2011.



By://S//Douglas W. Brown