<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> MAR-31-1998 <PERIOD-END> MAR-31-1998 <CASH> 24,556 <SECURITIES> 6,956 <RECEIVABLES> 10,484 <ALLOWANCES> 700 <INVENTORY> 10,263 <CURRENT-ASSETS> 54,280 <PP&E> 26,636 <DEPRECIATION> 14,287 <TOTAL-ASSETS> 66,629 <CURRENT-LIABILITIES> 9,412 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 20,713 <OTHER-SE> 36,504 <TOTAL-LIABILITY-AND-EQUITY> 66,629 <SALES> 52,706 <TOTAL-REVENUES> 52,706 <CGS> 28,709 <TOTAL-COSTS> 41,015 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 233 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 13,359 <INCOME-TAX> 4,542 <INCOME-CONTINUING> 8,817 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 8,817 <EPS-PRIMARY> .73 <EPS-DILUTED> .71