<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED MARCH 31, AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                                                  
<PERIOD-TYPE>                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1995
<PERIOD-START>                             JAN-01-1996             JAN-01-1995
<PERIOD-END>                               MAR-31-1996             MAR-31-1995
<CASH>                                       1,881,000               2,910,000
<SECURITIES>                                58,297,000              59,984,000
<RECEIVABLES>                               21,979,000              19,060,000
<ALLOWANCES>                                 (182,000)               (185,000)
<INVENTORY>                                  9,856,000               9,731,000
<CURRENT-ASSETS>                            92,773,000              92,541,000
<PP&E>                                      19,585,000              16,243,000
<DEPRECIATION>                             (7,786,000)             (6,593,000)
<TOTAL-ASSETS>                             120,589,000             118,308,000
<CURRENT-LIABILITIES>                       18,769,000              14,470,000
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                   123,952,000             123,850,000
<OTHER-SE>                                (22,132,000)            (20,012,000)
<TOTAL-LIABILITY-AND-EQUITY>               120,589,000             118,308,000
<SALES>                                     22,931,000              15,189,000
<TOTAL-REVENUES>                            22,931,000              15,189,000
<CGS>                                     (13,622,000)             (7,207,000)
<TOTAL-COSTS>                             (12,323,000)             (8,013,000)
<OTHER-EXPENSES>                             1,040,000                 501,000
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   0                       0
<INCOME-PRETAX>                            (1,974,000)                 470,000
<INCOME-TAX>                                         0                (16,000)
<INCOME-CONTINUING>                        (1,974,000)                 454,000
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                               (1,974,000)                 454,000
<EPS-PRIMARY>                                    (.13)                     .04
<EPS-DILUTED>                                        0                       0