<TABLE> <S> <C>

<ARTICLE>       5
<LEGEND>
The schedule contains summary financial information extracted from quarterly
financial statements for the nine months ended September 30, 1996 and is
qualified in its entirety by reference to such financial statements.
       
<S>                                                              <C>
<FISCAL-YEAR-END>                                                      DEC-31-1996
<PERIOD-END>                                                           SEP-30-1996
<PERIOD-TYPE>                                                                9-MOS
<CASH>                                                                  33,110,148
<SECURITIES>                                                            26,915,908
<RECEIVABLES>                                                            6,361,245
<ALLOWANCES>                                                            (1,071,000)
<INVENTORY>                                                              3,520,084
<CURRENT-ASSETS>                                                        69,563,925
<PP&E>                                                                  14,002,493
<DEPRECIATION>                                                          (6,868,708)
<TOTAL-ASSETS>                                                          84,943,035
<CURRENT-LIABILITIES>                                                   10,840,836
<BONDS>                                                                          0
<PREFERRED-MANDATORY>                                                            0
<PREFERRED>                                                                      0
<COMMON>                                                                   584,724
<OTHER-SE>                                                              59,372,762
<TOTAL-LIABILITY-AND-EQUITY>                                            84,943,035
<SALES>                                                                 38,524,923
<TOTAL-REVENUES>                                                        43,180,318
<CGS>                                                                   15,959,040
<TOTAL-COSTS>                                                           15,959,040
<OTHER-EXPENSES>                                                           376,185
<LOSS-PROVISION>                                                                 0
<INTEREST-EXPENSE>                                                               0
<INCOME-PRETAX>                                                         15,861,485
<INCOME-TAX>                                                             6,063,000
<INCOME-CONTINUING>                                                      9,798,485
<DISCONTINUED>                                                             368,501
<EXTRAORDINARY>                                                                  0
<CHANGES>                                                                        0
<NET-INCOME>                                                            10,166,986
<EPS-PRIMARY>                                                                 2.59
<EPS-DILUTED>                                                                    0
        

</TABLE>