<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 2,526
<SECURITIES> 3,426
<RECEIVABLES> 5,933
<ALLOWANCES> 0
<INVENTORY> 1,529
<CURRENT-ASSETS> 13,929
<PP&E> 4,950
<DEPRECIATION> (3,964)
<TOTAL-ASSETS> 17,204
<CURRENT-LIABILITIES> 8,132
<BONDS> 0
0
0
<COMMON> 43,750
<OTHER-SE> (36,216)
<TOTAL-LIABILITY-AND-EQUITY> 17,204
<SALES> 6,896
<TOTAL-REVENUES> 8,002
<CGS> 3,033
<TOTAL-COSTS> 3,416
<OTHER-EXPENSES> 6,250
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 161
<INCOME-PRETAX> (1,825)
<INCOME-TAX> 0
<INCOME-CONTINUING> (1,825)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (1,825)
<EPS-BASIC> (0.14)
<EPS-DILUTED> (0.14)
</TABLE>