<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED BALANCE SHEET AS OF JUNE 30, 1997 AND THE RELATED CONDENSED STATEMENTS
OF OPERATIONS AND OF CASH FLOWS FOR THE SIX MONTHS ENDED JUNE 30, 1997 INCLUDED
ELSEWHERE IN THIS FORM 10QSB AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO 
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                           3,652
<SECURITIES>                                     2,181
<RECEIVABLES>                                    3,180
<ALLOWANCES>                                        57
<INVENTORY>                                      4,212
<CURRENT-ASSETS>                                14,414
<PP&E>                                           4,413
<DEPRECIATION>                                   3,772
<TOTAL-ASSETS>                                  28,147
<CURRENT-LIABILITIES>                            1,761
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        35,432
<OTHER-SE>                                     (9,046)
<TOTAL-LIABILITY-AND-EQUITY>                    28,147
<SALES>                                         11,781
<TOTAL-REVENUES>                                12,041
<CGS>                                            6,259
<TOTAL-COSTS>                                    6,259
<OTHER-EXPENSES>                                 4,301
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  1,481
<INCOME-TAX>                                       637
<INCOME-CONTINUING>                                844
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       844
<EPS-PRIMARY>                                      .11
<EPS-DILUTED>                                      .11