<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS 3-MOS <FISCAL-YEAR-END> DEC-31-1996 DEC-31-1995 <PERIOD-START> JAN-01-1996 JAN-01-1995 <PERIOD-END> MAR-31-1996 MAR-31-1995 <CASH> 31,446 30,417 <SECURITIES> 17,357 36,211 <RECEIVABLES> 23,624 32,387 <ALLOWANCES> 1,600 1,600 <INVENTORY> 894 1,063 <CURRENT-ASSETS> 94,622 112,070 <PP&E> 19,651 18,703 <DEPRECIATION> 0 0 <TOTAL-ASSETS> 183,091 189,968 <CURRENT-LIABILITIES> 25,322 24,339 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 270 265 <OTHER-SE> 182,821 164,543 <TOTAL-LIABILITY-AND-EQUITY> 183,091 189,968 <SALES> 24,974 28,661 <TOTAL-REVENUES> 29,004 31,314 <CGS> 2,576 1,948 <TOTAL-COSTS> 5,226 4,311 <OTHER-EXPENSES> 38,207 15,487 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 0 0 <INCOME-PRETAX> (13,400) 12,559 <INCOME-TAX> (4,958) 4,709 <INCOME-CONTINUING> (8,442) 7,850 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> (8,442) 7,850 <EPS-PRIMARY> 0 0 <EPS-DILUTED> (0.31) 0.27