<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE INCOME STATEMENT FOR THE NINE-MONTH PERIOD ENDED SEPTEMBER 30, 1997, AND THE BALANCE SHEET AS OF SPETEMBER 30, 1997, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> SEP-30-1997 <CASH> 13,833 <SECURITIES> 11,311 <RECEIVABLES> 13,399 <ALLOWANCES> 629 <INVENTORY> 10,336 <CURRENT-ASSETS> 51,847 <PP&E> 17,017 <DEPRECIATION> 10,149 <TOTAL-ASSETS> 64,637 <CURRENT-LIABILITIES> 7,517 <BONDS> 185 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 75 <OTHER-SE> 55,659 <TOTAL-LIABILITY-AND-EQUITY> 64,637 <SALES> 27,902 <TOTAL-REVENUES> 36,373 <CGS> 9,687 <TOTAL-COSTS> 12,457 <OTHER-EXPENSES> 17,689 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 33 <INCOME-PRETAX> 6,950 <INCOME-TAX> 2,433 <INCOME-CONTINUING> 4,517 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 4,517 <EPS-PRIMARY> .59 <EPS-DILUTED> .59