
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS FOUND IN THE COMPANY'S REPORT ON FORM 10-K FOR THE YEAR
ENDED DECEMBER 31, 1997, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                           2,052
<SECURITIES>                                       337
<RECEIVABLES>                                    1,098
<ALLOWANCES>                                       183
<INVENTORY>                                        536
<CURRENT-ASSETS>                                 3,912
<PP&E>                                           1,197
<DEPRECIATION>                                     518
<TOTAL-ASSETS>                                   4,838
<CURRENT-LIABILITIES>                            1,551
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        31,438
<OTHER-SE>                                    (28,189)
<TOTAL-LIABILITY-AND-EQUITY>                     4,838
<SALES>                                          2,711
<TOTAL-REVENUES>                                 3,270
<CGS>                                              765
<TOTAL-COSTS>                                      765
<OTHER-EXPENSES>                                 4,503
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  27
<INCOME-PRETAX>                                (1,154)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            (1,154)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (1,154)
<EPS-PRIMARY>                                    (.16)
<EPS-DILUTED>                                    (.16)


</TABLE>
