<ARTICLE> 5 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> MAR-31-1997 <CASH> 864,000 <SECURITIES> 10,762,000 <RECEIVABLES> 7,168,000 <ALLOWANCES> (620,000) <INVENTORY> 213,000 <CURRENT-ASSETS> 18,425,000 <PP&E> 17,255,000 <DEPRECIATION> (11,130,000) <TOTAL-ASSETS> 26,729,000 <CURRENT-LIABILITIES> 5,636,000 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 19,056,000 <OTHER-SE> 0 <TOTAL-LIABILITY-AND-EQUITY> 26,729,000 <SALES> 8,487,000 <TOTAL-REVENUES> 8,487,000 <CGS> 5,072,000 <TOTAL-COSTS> 5,072,000 <OTHER-EXPENSES> 2,151,000 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 119,000 <INCOME-PRETAX> 1,196,000 <INCOME-TAX> 375,000 <INCOME-CONTINUING> 821,000 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 821,000 <EPS-PRIMARY> 0.11 <EPS-DILUTED> 0.11