EXHIBIT 11 DATA I/O CORPORATION COMPUTATION OF EARNINGS PER SHARE Earnings per share reported in Form 10-Q for the quarters ended September 26, 1996, and September 28, 1995 are based on the following (in thousands): Quarter Ended Nine Months Ended ------------- ----------------- Sept. 26, Sept. 28, Sept. 26, Sept. 28, Primary and fully diluted: 1996 1995 1996 1995 -------------------------- --------- ---------- ---------- ---------- Weighted Average Shares Outstanding 6,773 7,613 6,884 7,539 Dilutive Effect of Stock Options 432 408 --------- ---------- ---------- ---------- Weighted Average Common and Equivalent Shares Outstanding 6,773 8,045 6,884 7,947 --------- ---------- ---------- ---------- --------- ---------- ---------- ---------- Page 17