<ARTICLE>       5
<LEGEND>
The schedule contains summary financial information extracted from quarterly
financial statements for the three months ended March 31, 1996 and is
qualified in its entirety by reference to such financial statements.
       
                                                              
<FISCAL-YEAR-END>                                                      DEC-31-1996
<PERIOD-END>                                                           MAR-31-1996
<PERIOD-TYPE>                                                                3-MOS
<CASH>                                                                  42,107,468
<SECURITIES>                                                            22,415,416
<RECEIVABLES>                                                            7,145,688
<ALLOWANCES>                                                              (940,000)
<INVENTORY>                                                              3,934,384
<CURRENT-ASSETS>                                                        76,741,118
<PP&E>                                                                  13,173,564
<DEPRECIATION>                                                          (5,997,149)
<TOTAL-ASSETS>                                                          92,579,820
<CURRENT-LIABILITIES>                                                   12,401,353
<BONDS>                                                                          0
<PREFERRED-MANDATORY>                                                            0
<PREFERRED>                                                                      0
<COMMON>                                                                   584,724
<OTHER-SE>                                                              55,698,594
<TOTAL-LIABILITY-AND-EQUITY>                                            92,579,820
<SALES>                                                                 12,847,602
<TOTAL-REVENUES>                                                        14,076,589
<CGS>                                                                    5,224,006
<TOTAL-COSTS>                                                            5,224,006
<OTHER-EXPENSES>                                                            54,125
<LOSS-PROVISION>                                                                 0
<INTEREST-EXPENSE>                                                               0
<INCOME-PRETAX>                                                          3,804,261
<INCOME-TAX>                                                             1,395,000
<INCOME-CONTINUING>                                                      2,409,261
<DISCONTINUED>                                                              70,472
<EXTRAORDINARY>                                                                  0
<CHANGES>                                                                        0
<NET-INCOME>                                                             2,479,733
<EPS-PRIMARY>                                                                  .63
<EPS-DILUTED>                                                                    0