EXHIBIT 23.1



            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM



We have issued our report dated March 14, 2006,  accompanying  the  consolidated
financial  statements  and  schedule  included in the Annual  Report of Data I/O
Corporation on Form 10-K for the year ended December 31, 2005. We hereby consent
to the incorporation by reference of said report in the Registration  Statements
of Data I/O Corporation on Form S-8 (File Nos.  33-95608,  33-54422,  333-55911,
33-02254,  33-03958,  333-48595  and  333-121861)  and on  Form  S-3  (File  No.
333-121566).



/s/ GRANT THORNTON LLP

Seattle, Washington
March 14, 2006