<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONSOLIDATED STATEMENT OF INCOME AND THE CONSOLIDATED BALANCE SHEET AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> MAR-31-2000 <PERIOD-START> APR-01-1999 <PERIOD-END> JUN-30-1999 <CASH> 15,340 <SECURITIES> 29,148 <RECEIVABLES> 51,635 <ALLOWANCES> 0 <INVENTORY> 12,341 <CURRENT-ASSETS> 112,974 <PP&E> 59,583 <DEPRECIATION> 47,865 <TOTAL-ASSETS> 125,738 <CURRENT-LIABILITIES> 24,063 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 132 <OTHER-SE> 100,935 <TOTAL-LIABILITY-AND-EQUITY> 125,738 <SALES> 60,996 <TOTAL-REVENUES> 60,996 <CGS> 37,329 <TOTAL-COSTS> 46,124 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 15,265 <INCOME-TAX> 4,732 <INCOME-CONTINUING> 10,533 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 10,533 <EPS-BASIC> 0.80 <EPS-DILUTED> 0.78