Exhibit 11.1 Microsemi Corporation and Subsidiaries Unaudited Earnings Per Share (in thousands, except per share data) 13 weeks 13 weeks 39 weeks 39 weeks ended ended ended ended July 2, July 3, July 2, July 3, 1995 1994 1995 1994 ---- ---- ---- ---- PRIMARY Net earnings $1,698 $1,096 $4,059 $2,417 ===== ===== ===== ===== Outstanding shares 7,670 7,576 7,670 7,576 Equivalent shares 429 413 383 391 ----- ----- ----- ----- Primary common and common equivalent shares 8,099 7,989 8,053 7,967 ===== ===== ===== ===== Primary earnings per share $0.21 $0.14 $0.50 $0.30 ===== ===== ===== ===== FULLY DILUTED Net earnings $1,698 $1,096 $4,059 $2,417 Interest savings from conversion of convertible debt 334 332 1,000 90 ------ ------ ------ ----- Fully diluted earnings $2,032 $1,428 $5,059 $2,507 ====== ====== ====== ===== Outstanding shares 7,670 7,576 7,670 7,576 Equivalent shares 559 451 559 451 Convertible shares 3,523 3,523 3,523 1,066 ------ ------ ------ ----- Fully diluted common and common equivalent shares 11,752 11,550 11,752 9,093 ====== ====== ====== ===== Fully diluted earnings per share $0.17 $0.12 $0.43 $0.28 ====== ====== ====== =====