<ARTICLE> 5
<MULTIPLIER> 1,000

                                                                       
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          APR-30-1999             APR-30-1999             APR-30-1999
<PERIOD-START>                             APR-25-1998             APR-25-1998             APR-25-1998
<PERIOD-END>                               JUL-31-1998             OCT-30-1998             JAN-29-1999
<CASH>                                          31,476                  48,355                  59,886
<SECURITIES>                                    14,930                   8,750                   8,150
<RECEIVABLES>                                   35,960                  44,928                  50,735
<ALLOWANCES>                                       911                   1,511                   1,686
<INVENTORY>                                      9,732                  10,722                  11,751
<CURRENT-ASSETS>                                99,523                 121,565                 143,720
<PP&E>                                          22,292                  25,188                  29,939
<DEPRECIATION>                                   9,631                  11,128                  12,735
<TOTAL-ASSETS>                                 126,073                 150,548                 172,648
<CURRENT-LIABILITIES>                           26,397                  39,150                  36,792
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                        72,064                  75,468                  90,655
<OTHER-SE>                                      27,455                  35,796                  45,085
<TOTAL-LIABILITY-AND-EQUITY>                   126,073                 150,548                 172,648
<SALES>                                         57,375                 123,000                 198,616
<TOTAL-REVENUES>                                57,375                 123,000                 198,616
<CGS>                                           23,239                  50,120                  80,938
<TOTAL-COSTS>                                   23,239                  50,120                  80,938
<OTHER-EXPENSES>                                22,901                  49,239                  79,540
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                   0                       0                       0
<INCOME-PRETAX>                                 11,356                  24,757                  39,796
<INCOME-TAX>                                     4,259                   9,284                  14,929
<INCOME-CONTINUING>                              7,097                  15,473                  24,867
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     7,097                  15,473                  24,867
<EPS-BASIC>                                       0.03                    0.06                    0.09
<EPS-DILUTED>                                     0.02                    0.05                    0.08