<ARTICLE> 5 <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-START> JAN-01-1996 <PERIOD-END> JUN-30-1996 <CASH> 3,834 <SECURITIES> 39,948 <RECEIVABLES> 16,350 <ALLOWANCES> (549) <INVENTORY> 421 <CURRENT-ASSETS> 64,730 <PP&E> 9,571 <DEPRECIATION> (4,043) <TOTAL-ASSETS> 76,971 <CURRENT-LIABILITIES> 20,431 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 23 <OTHER-SE> 55,943 <TOTAL-LIABILITY-AND-EQUITY> 76,971 <SALES> 30,574 <TOTAL-REVENUES> 30,574 <CGS> 13,374 <TOTAL-COSTS> 13,374 <OTHER-EXPENSES> 15,048 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 286 <INCOME-PRETAX> 3,010 <INCOME-TAX> 1,248 <INCOME-CONTINUING> 1,763 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,763 <EPS-PRIMARY> 0.08 <EPS-DILUTED> 0.07