<DOCUMENT>
<TYPE>EX-32.2
<SEQUENCE>67
<FILENAME>ex32_2.txt
<TEXT>

                                                                    EXHIBIT 32.2

                    Certification by Chief Financial Officer
                       Pursuant to 18 U.S.C. Section 1350
                             As Adopted Pursuant to
                  Section 906 of the Sarbanes-Oxley Act of 2002



In connection with the annual report of Data I/O Corporation  (the "Company") on
Form 10-K for the period ended  December  31, 2005 as filed with the  Securities
and Exchange  Commission on the date hereof (the  "Report"),  I, Joel S. Hatlen,
Chief  Financial  Officer of the Company,  certify,  that  pursuant to 18 U.S.C.
Section 1350, as adopted  pursuant to Section 906 of the  Sarbanes-Oxley  Act of
2002, that:

     (1)  The Report fully  complies with the  requirements  of Section 13(a) or
          15(d) of the Securities Exchange Act of 1934; and

     (2)  The  information  contained  in the  Report  fairly  presents,  in all
          material respects,  the financial  condition and results of operations
          of the Company.


/s/ Joel S. Hatlen
------------------------------------
Joel S. Hatlen
Chief Financial Officer
(Principal Financial Officer)
March 29, 2006





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</DOCUMENT>
