
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1996
<PERIOD-START>                             MAR-31-1995
<PERIOD-END>                               MAR-31-1996
<CASH>                                           3,390
<SECURITIES>                                     7,217
<RECEIVABLES>                                    9,993
<ALLOWANCES>                                     1,365
<INVENTORY>                                      5,483
<CURRENT-ASSETS>                                26,515
<PP&E>                                           4,667
<DEPRECIATION>                                   2,572
<TOTAL-ASSETS>                                  37,400
<CURRENT-LIABILITIES>                            5,603
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        16,791
<OTHER-SE>                                      15,006
<TOTAL-LIABILITY-AND-EQUITY>                    37,400
<SALES>                                         45,138
<TOTAL-REVENUES>                                45,138
<CGS>                                           17,018
<TOTAL-COSTS>                                   17,018
<OTHER-EXPENSES>                                21,249
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  7,572
<INCOME-TAX>                                     2,410
<INCOME-CONTINUING>                              5,162
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     5,162
<EPS-PRIMARY>                                     1.11
<EPS-DILUTED>                                     1.11
        

</TABLE>
