<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS 12-MOS <FISCAL-YEAR-END> DEC-31-1998 DEC-31-1999 <PERIOD-START> JAN-01-1998 JAN-01-1999 <PERIOD-END> DEC-31-1998 DEC-31-1999 <CASH> 5,471 4,321 <SECURITIES> 32,191 15,566 <RECEIVABLES> 28,220 32,088 <ALLOWANCES> 4,955 1,701 <INVENTORY> 15,954 18,014 <CURRENT-ASSETS> 84,935 74,327 <PP&E> 28,339 36,027 <DEPRECIATION> 10,887 15,052 <TOTAL-ASSETS> 104,345 97,104 <CURRENT-LIABILITIES> 25,875 27,526 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 82 84 <OTHER-SE> 78,287 69,424 <TOTAL-LIABILITY-AND-EQUITY> 104,345 97,104 <SALES> 144,370 157,491 <TOTAL-REVENUES> 144,370 157,491 <CGS> 88,950 104,323 <TOTAL-COSTS> 88,950 104,323 <OTHER-EXPENSES> 42,653 47,186 <LOSS-PROVISION> 529 427 <INTEREST-EXPENSE> 135 0 <INCOME-PRETAX> 13,776 3,928 <INCOME-TAX> 4,408 1,257 <INCOME-CONTINUING> 9,368 2,671 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 9,368 2,671 <EPS-BASIC> 1.22 0.39 <EPS-DILUTED> 1.20 0.38