<ARTICLE> 5 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> DEC-31-1999 <CASH> 42,565 <SECURITIES> 79,420 <RECEIVABLES> 39,386 <ALLOWANCES> 1,670 <INVENTORY> 957 <CURRENT-ASSETS> 170,379 <PP&E> 94,567 <DEPRECIATION> 39,459 <TOTAL-ASSETS> 249,492 <CURRENT-LIABILITIES> 53,401 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 48 <OTHER-SE> 195,653 <TOTAL-LIABILITY-AND-EQUITY> 249,492 <SALES> 66,504 <TOTAL-REVENUES> 66,504 <CGS> 8,025 <TOTAL-COSTS> 8,025 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 55 <INCOME-PRETAX> 4,322 <INCOME-TAX> 3,050 <INCOME-CONTINUING> 1,272 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (85) <EPS-BASIC> 0 <EPS-DILUTED> 0