<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