<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> MAY-31-1997 <PERIOD-START> JUN-01-1996 <PERIOD-END> FEB-28-1997 <CASH> 11,943 <SECURITIES> 27,055 <RECEIVABLES> 44,482 <ALLOWANCES> 254 <INVENTORY> 33,463 <CURRENT-ASSETS> 121,449 <PP&E> 40,552 <DEPRECIATION> 23,835 <TOTAL-ASSETS> 142,315 <CURRENT-LIABILITIES> 14,209 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 56,263 <OTHER-SE> 71,843 <TOTAL-LIABILITY-AND-EQUITY> 142,315 <SALES> 107,159 <TOTAL-REVENUES> 107,159 <CGS> 47,880 <TOTAL-COSTS> 47,880 <OTHER-EXPENSES> 38,863 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 21,338 <INCOME-TAX> 7,510 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 13,828 <EPS-PRIMARY> 1.60 <EPS-DILUTED> 1.60