Exhibit 11 Computation of Earnings per Common and Common Equivalent Share (In thousands except per share amounts) Quarters Ended June 29 June 30 1997 1996 Primary calculation: -------- ------- Net income $14,657 $ 9,904 ======= ======= Weighted average shares outstanding during the period 13,005 12,949 Shares issuable in connection with stock plans less shares purchasable with proceeds using the average per share purchase price for the respective periods as shown below 294 401 ------- ------- Total common and common equivalent shares - primary 13,299 13,350 ======= ======= Primary earnings per common and common equivalent share $ 1.10 $ .74 ======= ======= Average share price for the period $ 46.03 $ 46.89 ======= ======= Fully diluted calculation: Net income $14,657 $ 9,904 ======= ======= Weighted average shares outstanding during the period 13,005 12,949 Shares issuable in connection with stock plans less shares purchasable with proceeds using the higher of the average or period end share price as shown below 374 404 ------- ------- Total common and common equivalent shares - fully diluted 13,379 13,353 ======= ======= Fully diluted earnings per common and common equivalent share $ 1.10 $ .74 ======= ======= Higher of average or period end share price $ 52.69 $ 47.13 ======= =======