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Note A - The Company and Summary of Significant Accounting Policies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Business Description and Accounting Policies [Text Block]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

		December 31,
		2012				2011
Accounts receivable		$	625,310			$	984,872
Allowance for doubtful accounts			(20,526	)			(397,526	)
Accounts receivable, net allowances for doubtful accounts			604,784				587,346

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

		Balance at Beginning of Year				Charged to Costs and Expenses				Deductions From Reserves				Balance at End of Year
Year Ended December 31, 2012
Allowance for Doubtful Accounts		$	397,526			$	-			$	377,000			$	20,526
Year Ended December 31, 2011
Allowance for Doubtful Accounts		$	11,526			$	386,000			$	-			$	397,526

Property, Plant and Equipment, Estimated Useful Lives

Equipment and leasehold improvements
Equipment (years)		3	-	5
Furniture and fixtures (years)		3	-	5
Software (years)			3
Leasehold improvements		life or lease term

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

		Three Months Ended March 31,
		2013				2012
Selling, general and administrative		$	11,121			$	2,223
Research, development and engineering			1,326				18,518
		$	12,447			$	20,741

		Year ended December 31,
		2012				2011
Selling, general and administrative		$	22,502			$	12,054
Research, development and engineering			27,340				45,126
		$	49,842			$	57,180

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		Year ended December 31,
		2012				2011
Risk free interest rate			0.80	%			1.64	%
Expected life of options (in years)			4.48				4.52
Expected dividends			0	%			0	%
Volatility of stock price			114	%			114	%

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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