<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          17,673
<SECURITIES>                                    21,528<F1>
<RECEIVABLES>                                    2,547
<ALLOWANCES>                                     1,014
<INVENTORY>                                      1,769
<CURRENT-ASSETS>                                45,142
<PP&E>                                          15,324
<DEPRECIATION>                                  10,403
<TOTAL-ASSETS>                                  54,048
<CURRENT-LIABILITIES>                           29,656
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       121,557
<OTHER-SE>                                   (131,349)
<TOTAL-LIABILITY-AND-EQUITY>                    54,048
<SALES>                                          3,470
<TOTAL-REVENUES>                                22,970
<CGS>                                            2,124
<TOTAL-COSTS>                                    7,071
<OTHER-EXPENSES>                                62,281
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 719
<INCOME-PRETAX>                               (45,141)
<INCOME-TAX>                                       139
<INCOME-CONTINUING>                           (45,280)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (45,280)
<EPS-PRIMARY>                                   (2.41)
<EPS-DILUTED>                                   (2.41)
<FN>
<F1>This amount represents short-term investments held by the Company at 9-30-97.
</FN>