<ARTICLE> 5 <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> JUN-30-1997 <CASH> 34,301 <SECURITIES> 9,450 <RECEIVABLES> 15,126 <ALLOWANCES> (355) <INVENTORY> 6,966 <CURRENT-ASSETS> 69,605 <PP&E> 20,626 <DEPRECIATION> 5,298 <TOTAL-ASSETS> 94,992 <CURRENT-LIABILITIES> 11,459 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 8 <OTHER-SE> 79,687 <TOTAL-LIABILITY-AND-EQUITY> 94,992 <SALES> 43,627 <TOTAL-REVENUES> 43,627 <CGS> 20,146 <TOTAL-COSTS> 35,697 <OTHER-EXPENSES> 348 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> (140) <INCOME-PRETAX> 8,984 <INCOME-TAX> 3,738 <INCOME-CONTINUING> 5,246 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 5,246 <EPS-PRIMARY> 0.67 <EPS-DILUTED> 0.66