<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
consolidated balance sheets, statements of operation and statements of cash
flows included in the Company's Form 10-Q for the period ended June 30, 1996,
and is qualified in its entirety by reference to such financial statements
and notes thereto.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                          10,421
<SECURITIES>                                    58,222
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                52,249
<PP&E>                                          18,314
<DEPRECIATION>                                (10,310)
<TOTAL-ASSETS>                                  79,930
<CURRENT-LIABILITIES>                           16,469
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        14,001
<OTHER-SE>                                      47,114
<TOTAL-LIABILITY-AND-EQUITY>                    79,930
<SALES>                                              0
<TOTAL-REVENUES>                                11,034
<CGS>                                                0
<TOTAL-COSTS>                                   12,511
<OTHER-EXPENSES>                                 2,590
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 278
<INCOME-PRETAX>                                (3,026)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            (3,026)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (3,026)
<EPS-PRIMARY>                                    (.25)
<EPS-DILUTED>                                    (.25)