Note S - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	201 9			201 8
Accrued compensation	$	84,000		$	91,000
Accounts receivable allowance		474,000			474,000
Stock-based compensation		894,000			644,000
Basis differences in fixed assets		(5,000	)		(13,000	)
Basis differences in intangible assets		62,000			50,000
Net operating loss and credit carryforwards		15,002,000			12,735,000
Valuation allowances		(16,511,000	)		(13,981,000	)
	$	—		$	—

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	201 9			201 8
Federal statutory income tax rate		21	%		21	%
Permanent differences		(2	)		—
Effect of net operating loss		(22	)		(21	)
Effective tax rate		—	%		—	%