<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> JUN-30-1998 <CASH> 18,698 <SECURITIES> 28,166 <RECEIVABLES> 6,708 <ALLOWANCES> 172 <INVENTORY> 704 <CURRENT-ASSETS> 54,974 <PP&E> 6,798 <DEPRECIATION> 2,724 <TOTAL-ASSETS> 59,256 <CURRENT-LIABILITIES> 6,001 <BONDS> 131 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 26 <OTHER-SE> 53,098 <TOTAL-LIABILITY-AND-EQUITY> 59,256 <SALES> 21,640 <TOTAL-REVENUES> 21,640 <CGS> 6,426 <TOTAL-COSTS> 34,040 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 35 <INCOME-PRETAX> 3,803 <INCOME-TAX> 1,255 <INCOME-CONTINUING> 2,548 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 2,548 <EPS-PRIMARY> 0.09 <EPS-DILUTED> 0.08