<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> SEP-30-1999
<PERIOD-START> OCT-01-1998
<PERIOD-END> SEP-30-1999
<CASH> 4,638,607
<SECURITIES> 0
<RECEIVABLES> 3,413,771
<ALLOWANCES> 0
<INVENTORY> 3,496,773
<CURRENT-ASSETS> 11,638,785
<PP&E> 2,037,906
<DEPRECIATION> (1,292,716)
<TOTAL-ASSETS> 12,612,189
<CURRENT-LIABILITIES> 3,081,733
<BONDS> 0
0
177
<COMMON> 6,766
<OTHER-SE> 8,935,272
<TOTAL-LIABILITY-AND-EQUITY> 12,612,189
<SALES> 22,487,882
<TOTAL-REVENUES> 22,487,882
<CGS> 10,570,009
<TOTAL-COSTS> 5,249,611
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> (30,137)
<INCOME-PRETAX> 6,698,399
<INCOME-TAX> 2,517,764
<INCOME-CONTINUING> 4,180,635
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 4,180,635
<EPS-BASIC> .68
<EPS-DILUTED> .50
</TABLE>