TRIMBLE NAVIGATION LIMITED EXHIBIT 11.1 Computation of Earnings (Loss) Per Common Share Three Months Ended Nine Months Ended September 30, September 30, 1996 1995 1996 1995 - ------------------------------------------------------------------------------------------------------------- (In thousands, except per share data) PRIMARY EARNINGS (LOSS) PER COMMON SHARE Computation of common and common equivalent shares outstanding: Common stock outstanding 22,029 20,338 21,833 19,425 Common stock options - 1,382 - 1,236 Common stock warrants - 255 - 202 --------- ---------- ---------- ----------- Total weighted average common and dilutive common equivalent shares outstanding 22,029 21,975 21,833 20,863 ========= ========== ========== =========== Net income (loss) $ (8,834) $ 4,340 $ (12,565) $ 10,554 ========== ========== ========== =========== Primary earnings (loss) per share $ (0.40) $ 0.20 $ (0.58) $ 0.51 ========== ========== ========= =========== FULLY DILUTED EARNINGS (LOSS) PER COMMON SHARE Computation of common and common equivalent shares outstanding: Common stock outstanding 22,029 20,338 21,833 19,425 Common stock options - 1,428 - 1,278 Common stock warrants - 264 - 211 ---------- ---------- ---------- ----------- Total weighted average common and dilutive common equivalent shares outstanding 22,029 22,030 21,833 20,914 ========== ========== ========== =========== Net income (loss) $ (8,834) $ 4,430 $ (12,565) $ 10,554 ========== ========== ========== =========== Fully diluted earnings (loss) per share $ (0.40) $ 0.20 $ (0.58) $ 0.50 ========== ========== ========== =========== 21