<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE INCOME
STATEMENT FOR THE SIX-MONTH PERIOD ENDED JUNE 30, 1998, AND THE BALANCE SHEET AS
OF JUNE 30, 1998, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                           5,985
<SECURITIES>                                    14,211
<RECEIVABLES>                                   11,075
<ALLOWANCES>                                       503
<INVENTORY>                                     15,052
<CURRENT-ASSETS>                                51,700
<PP&E>                                          20,279
<DEPRECIATION>                                  11,130
<TOTAL-ASSETS>                                  69,064
<CURRENT-LIABILITIES>                            8,441
<BONDS>                                             96
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            75
<OTHER-SE>                                      58,592
<TOTAL-LIABILITY-AND-EQUITY>                    69,064
<SALES>                                         12,304
<TOTAL-REVENUES>                                16,899
<CGS>                                            3,747
<TOTAL-COSTS>                                    5,663
<OTHER-EXPENSES>                                11,702
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  13
<INCOME-PRETAX>                                   (64)
<INCOME-TAX>                                      (24)
<INCOME-CONTINUING>                               (40)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                      (40)
<EPS-PRIMARY>                                    (.01)
<EPS-DILUTED>                                    (.01)