<TABLE> <S> <C>

<ARTICLE>                     5
<MULTIPLIER>                  1,000
       
<S>                                              <C>             <C>              <C>              <C>
<PERIOD-TYPE>                                    12-MOS          3-MOS            3-MOS            3-MOS
<FISCAL-YEAR-END>                                SEP-30-1996     SEP-30-1996      SEP-30-1996      SEP-30-1996
<PERIOD-START>                                   OCT-01-1995     APR-01-1996      JAN-01-1996      OCT-01-1995
<PERIOD-END>                                     SEP-30-1996     JUN-30-1996      MAR-31-1996      DEC-31-1995
<CASH>                                                 9,377          12,259            7,033           12,900
<SECURITIES>                                           6,663           3,451            7,526            1,255
<RECEIVABLES>                                          4,515           5,396            5,227            4,618
<ALLOWANCES>                                             340             326              308              271
<INVENTORY>                                            6,475           5,935            5,607            5,358
<CURRENT-ASSETS>                                      27,244          27,087           25,566           24,383
<PP&E>                                                15,726          14,917           14,350           13,090
<DEPRECIATION>                                         8,366           8,194            7,835            7,488
<TOTAL-ASSETS>                                        35,246          34,428           32,658           30,532
<CURRENT-LIABILITIES>                                  9,606           9,515            9,220            8,570
<BONDS>                                                1,566           1,604            1,549            1,440
<PREFERRED-MANDATORY>                                      0               0                0                0
<PREFERRED>                                                0               0                0                0
<COMMON>                                                  87              86               85               81
<OTHER-SE>                                            23,987          23,225           21,804           20,441
<TOTAL-LIABILITY-AND-EQUITY>                          35,246          34,428           32,658           30,532
<SALES>                                               35,350           9,390            9,289            8,174
<TOTAL-REVENUES>                                      36,806           9,782            9,597            8,567
<CGS>                                                 18,008           4,627            4,557            4,062
<TOTAL-COSTS>                                         18,008           4,627            4,557            4,062
<OTHER-EXPENSES>                                      14,498           3,830            3,841            3,394
<LOSS-PROVISION>                                           0               0                0                0
<INTEREST-EXPENSE>                                       687             111              116              105
<INCOME-PRETAX>                                        4,761           1,436            1,315            1,216
<INCOME-TAX>                                             372             113              102               95
<INCOME-CONTINUING>                                    4,389           1,323            1,213            1,121
<DISCONTINUED>                                             0               0                0                0
<EXTRAORDINARY>                                            0               0                0                0
<CHANGES>                                                  0               0                0                0
<NET-INCOME>                                           4,389           1,323            1,213            1,121
<EPS-PRIMARY>                                           0.52            0.15             0.14             0.14
<EPS-DILUTED>                                           0.47            0.14             0.13             0.12
        

</TABLE>