<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> MAY-31-1997 <PERIOD-START> JUN-01-1996 <PERIOD-END> NOV-30-1996 <CASH> 9911 <SECURITIES> 22735 <RECEIVABLES> 46677 <ALLOWANCES> 318 <INVENTORY> 34549 <CURRENT-ASSETS> 118689 <PP&E> 40254 <DEPRECIATION> 23470 <TOTAL-ASSETS> 139315 <CURRENT-LIABILITIES> 15293 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 56017 <OTHER-SE> 68005 <TOTAL-LIABILITY-AND-EQUITY> 139315 <SALES> 69957 <TOTAL-REVENUES> 69957 <CGS> 30750 <TOTAL-COSTS> 30750 <OTHER-EXPENSES> 25821 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 13858 <INCOME-TAX> 4892 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 8966 <EPS-PRIMARY> 1.04 <EPS-DILUTED> 1.04