<ARTICLE> 5
<MULTIPLIER> 1
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               JUL-31-1999
<EXCHANGE-RATE>                                      1
<CASH>                                      24,576,000
<SECURITIES>                                36,903,000
<RECEIVABLES>                               12,322,000
<ALLOWANCES>                                   503,000
<INVENTORY>                                  2,754,000
<CURRENT-ASSETS>                            80,637,000
<PP&E>                                      37,273,000
<DEPRECIATION>                              15,159,000
<TOTAL-ASSETS>                             110,931,000
<CURRENT-LIABILITIES>                       19,750,000
<BONDS>                                      4,112,000
<PREFERRED-MANDATORY>                        2,136,000
<PREFERRED>                                          0
<COMMON>                                       250,000
<OTHER-SE>                                  81,852,000
<TOTAL-LIABILITY-AND-EQUITY>               110,931,000
<SALES>                                     20,999,000
<TOTAL-REVENUES>                            20,999,000
<CGS>                                       13,796,000
<TOTAL-COSTS>                               13,796,000
<OTHER-EXPENSES>                             4,127,000
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             299,000
<INCOME-PRETAX>                              3,386,000
<INCOME-TAX>                                 (747,000)
<INCOME-CONTINUING>                          4,133,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 4,133,000
<EPS-BASIC>                                        .17
<EPS-DILUTED>                                      .14