<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> 6-MOS <FISCAL-YEAR-END> APR-01-1999 <PERIOD-START> MAR-31-2000 <PERIOD-END> SEP-30-1999 <CASH> 7,767 <SECURITIES> 29,149 <RECEIVABLES> 46,791 <ALLOWANCES> 0 <INVENTORY> 6,006 <CURRENT-ASSETS> 100,044 <PP&E> 52,890 <DEPRECIATION> 42,664 <TOTAL-ASSETS> 119,272 <CURRENT-LIABILITIES> 16,341 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 133 <OTHER-SE> 102,251 <TOTAL-LIABILITY-AND-EQUITY> 119,272 <SALES> 91,827 <TOTAL-REVENUES> 91,827 <CGS> 60,342 <TOTAL-COSTS> 76,020 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 16,738 <INCOME-TAX> 5,188 <INCOME-CONTINUING> 11,550 <DISCONTINUED> (911) <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 10,639 <EPS-BASIC> 0.81 <EPS-DILUTED> 0.78