<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS 12-MOS <FISCAL-YEAR-END> DEC-31-1997 DEC-31-1998 <PERIOD-START> JAN-01-1997 JAN-01-1998 <PERIOD-END> DEC-31-1997 DEC-31-1998 <CASH> 9,477 5,471 <SECURITIES> 25,274 32,191 <RECEIVABLES> 22,517 28,220 <ALLOWANCES> 5,169 4,955 <INVENTORY> 19,075 15,954 <CURRENT-ASSETS> 79,154 84,935 <PP&E> 20,513 28,339 <DEPRECIATION> 7,205 10,887 <TOTAL-ASSETS> 94,837 104,345 <CURRENT-LIABILITIES> 15,889 25,875 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 82 82 <OTHER-SE> 78,866 78,369 <TOTAL-LIABILITY-AND-EQUITY> 94,837 104,345 <SALES> 128,481 144,370 <TOTAL-REVENUES> 128,481 144,370 <CGS> 83,553 88,950 <TOTAL-COSTS> 83,553 88,950 <OTHER-EXPENSES> 35,029 40,980 <LOSS-PROVISION> 155 529 <INTEREST-EXPENSE> 30 135 <INCOME-PRETAX> 9,741 13,776 <INCOME-TAX> 3,330 4,408 <INCOME-CONTINUING> 0 0 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 6,411 9,368 <EPS-PRIMARY> 0.81 1.22 <EPS-DILUTED> 0.77 1.20