EXHIBIT 11 Microsemi Corporation and Subsidiaries Unaudited Earnings Per Share Calculation (in thousands, except earnings per share) 13 Weeks Ended 26 Weeks Ended March 30, 1997 March 31, 1996 March 30, 1997 March 31,1996 -------------- -------------- -------------- ------------- (amounts in 000's) (amounts in 000's) PRIMARY Net income $ 2,395 $ 1,828 $ 4,284 $ 3,257 ======= ======= ======= ======= Equivalent shares outstanding 8,568 7,824 8,363 7,824 Equivalent shares from stock options 337 408 369 440 ------- ------- ------- ------- Primary common and common equivalent shares 8,905 8,232 8,732 8,264 ======= ======= ======= ======= Primary earnings per share $ 0.27 $ 0.22 $ 0.49 $ 0.39 ======= ======= ======= ======= FULLY DILUTED Net income $ 2,395 $ 1,828 $ 4,284 $ 3,257 Interest savings from conversion of convertible debt, net of income taxes 305 323 626 646 ------- ------- ------- ------- Fully diluted net income $ 2,700 $ 2,151 $ 4,910 $ 3,903 ======= ======= ======= ======= Equivalent shares outstanding 8,568 7,824 8,363 7,824 Equivalent shares from stock options 337 408 403 440 Convertible shares 2,988 3,523 3,194 3,523 ------- ------- ------- ------- Fully diluted common and common equivalent shares 11,893 11,755 11,960 11,787 ======= ======= ======= ======= Fully diluted earnings per share $ 0.23 $ 0.18 $ 0.41 $ 0.33 ======= ======= ======= =======