<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1993 <PERIOD-START> JAN-01-1994 <PERIOD-END> SEP-30-1994 <CASH> 74,702 <SECURITIES> 0 <RECEIVABLES> 32,179 <ALLOWANCES> 1,488 <INVENTORY> 16,496 <CURRENT-ASSETS> 3,228 <PP&E> 82,352 <DEPRECIATION> 50,289 <TOTAL-ASSETS> 173,860 <CURRENT-LIABILITIES> 37,578 <BONDS> 0 <COMMON> 16,997 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 114,451 <TOTAL-LIABILITY-AND-EQUITY> 173,860 <SALES> 45,928 <TOTAL-REVENUES> 46,980 <CGS> 24,322 <TOTAL-COSTS> 24,322 <OTHER-EXPENSES> 17,831 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 4,827 <INCOME-TAX> 2,153 <INCOME-CONTINUING> 2,674 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 2,674 <EPS-PRIMARY> .16 <EPS-DILUTED> .16