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Note M - Deferred Revenue	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Deferred Revenue [Text bLock]	NOTE M—DEFERRED REVENUE Deferred revenue represents unearned revenue from customer prepayments prior to maintenance contractual term. Maintenance contracts include provisions for unspecified when-and-if available product updates and customer telephone support services, and are recognized ratably over the term of the service period. At December 31, 2019 and 2018, amounts in deferred revenue were approximately $359,000 and $197,000, respectively.

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