<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from Consolidated
Balance Sheet and Consolidated Statement of Income and is qualified in its
entirety by reference to such financial statements.

<MULTIPLIER> 1,000

                                                                                            
<PERIOD-TYPE>                   12-MOS                3-MOS                3-MOS                6-MOS            6-MOS
<FISCAL-YEAR-END>          MAR-31-2000          MAR-31-2001          MAR-31-2000          MAR-31-2001      MAR-31-2000
<PERIOD-START>             APR-01-1999          JUL-01-2000          JUL-01-1999          APR-01-2000      APR-01-1999
<PERIOD-END>               MAR-31-2000          SEP-30-2000          SEP-30-1999          SEP-30-2000      SEP-30-1999
<CASH>                          48,515               37,204                    0                    0                0
<SECURITIES>                    21,807               17,785                    0                    0                0
<RECEIVABLES>                   11,144               14,046                    0                    0                0
<ALLOWANCES>                       754                  809                    0                    0                0
<INVENTORY>                      3,131                3,634                    0                    0                0
<CURRENT-ASSETS>                90,492               77,176                    0                    0                0
<PP&E>                          12,603               15,736                    0                    0                0
<DEPRECIATION>                   6,946                8,849                    0                    0                0
<TOTAL-ASSETS>                  96,748              135,157                    0                    0                0
<CURRENT-LIABILITIES>           15,626               17,975                    0                    0                0
<BONDS>                              0                    0                    0                    0                0
<PREFERRED-MANDATORY>                0                    0                    0                    0                0
<PREFERRED>                          0                    0                    0                    0                0
<COMMON>                            31                   33                    0                    0                0
<OTHER-SE>                      41,424               73,939                    0                    0                0
<TOTAL-LIABILITY-AND-EQUITY>    96,748              135,157                    0                    0                0
<SALES>                              0               20,790               13,541               38,551           26,355
<TOTAL-REVENUES>                     0               28,819               20,304               53,988           39,375
<CGS>                                0                7,262                5,086               13,356            9,900
<TOTAL-COSTS>                        0                8,119                5,483               14,807           10,701
<OTHER-EXPENSES>                     0               19,872               10,331               32,766           19,558
<LOSS-PROVISION>                     0                    0                    0                    0                0
<INTEREST-EXPENSE>                   0                    0                    0                    0                0
<INCOME-PRETAX>                      0                  828                4,490                6,415            9,116
<INCOME-TAX>                         0                2,697                1,800                5,014            3,564
<INCOME-CONTINUING>                  0                (761)                3,194                3,543            6,328
<DISCONTINUED>                       0                    0                    0                    0                0
<EXTRAORDINARY>                      0                    0                    0                    0                0
<CHANGES>                            0                    0                    0                    0                0
<NET-INCOME>                         0                (761)                3,194                3,543            6,328
<EPS-BASIC>                          0               (0.03)                 0.16                 0.13             0.36
<EPS-DILUTED>                        0               (0.03)                 0.12                 0.12             0.25