<ARTICLE> 5 <MULTIPLIER> 1000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> MAR-31-1997 <CASH> 14,289 <SECURITIES> 80,101 <RECEIVABLES> 84,095 <ALLOWANCES> 5,565 <INVENTORY> 17,132 <CURRENT-ASSETS> 204,795 <PP&E> 90,501 <DEPRECIATION> 48,930 <TOTAL-ASSETS> 310,651 <CURRENT-LIABILITIES> 89,171 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 34,141 <OTHER-SE> 146,734 <TOTAL-LIABILITY-AND-EQUITY> 310,651 <SALES> 0 <TOTAL-REVENUES> 150,394 <CGS> 0 <TOTAL-COSTS> 85,872 <OTHER-EXPENSES> 56,225 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 8,297 <INCOME-TAX> 3,153 <INCOME-CONTINUING> 5,144 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 5,144 <EPS-PRIMARY> 0.15 <EPS-DILUTED> 0.15