EXHIBIT 11 PERIPHONICS CORPORATION COMPUTATION OF EARNINGS PER COMMON SHARE (In thousands, except per share data) Year Ended May 31, 1996 1995 1994 ---- ---- ---- COMPUTATION OF ADJUSTED NET EARNINGS: Earnings before cumulative effect of change in accounting principle $ 9,215 $ 3,184 $ 2,034 Cumulative effect of change in accounting principle - - (83) ------- ------- -------- Net earnings for primary and fully diluted earnings per common share computation $ 9,215 3,184 $ 1,951 ======= ======= ======== COMPUTATION OF ADJUSTED WEIGHTED AVERAGE SHARES OUTSTANDING: Weighted average shares outstanding 6,445 4,135 3,750 Add: Shares assumed to be issued upon conversion of Series A preferred stock - 623 750 Add: Shares assumed to be issued upon conversion of preferred stock issued by subsidiary through exercise of a warrant 39 39 39 Add: Effect of stock options outstanding 146 92 75 ------- ------- -------- Weighted average shares and common equivalent shares used for primary earnings per common share computation 6,630 4,889 4,614 Add: Effect of additional stock options outstanding for fully diluted computation 44 - 5 ------- ------ - Weighted average shares and common equivalent shares used for fully diluted earnings per common share computation 6,674 4,889 4,619 ======== ======= ======== EARNINGS PER COMMON AND COMMON EQUIVALENT SHARE: PRIMARY: Earnings before cumulative effect of change in accounting principle $ 1.39 $ .65 $ 0.44 Cumulative effect of change in accounting principle - - (0.02) ------- ------ --------- Net earnings $ 1.39 $ .65 $ 0.42 ======= ====== ========= FULLY DILUTED: Earnings before cumulative effect of change in accounting principle $ 1.38 $ .65 $ 0.44 Cumulative effect of change in accounting principle - - (0.02) ------- -------- ---------- Net earnings $ 1.38 $ .65 $ 0.42 ======= ======== =========