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NOTE 1 — Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Activities in allowance for doubtful accounts

Year				Balance at Beginning of Year				Charged to Costs and Expenses				Amounts Written Off				Balance at End of Year
	2022			$	40,651			$	—			$	—			$	40,651
	2021			$	40,651			$	—			$	—			$	40,651

Inventory Components

		December 31,
		2022				2021
Raw materials and sub-assemblies		$	6,193,453			$	5,757,869
Finished goods			289,181				277,598
Inventory reserves			(880,943	)			(880,943	)
Inventory, net		$	5,601,691			$	5,154,524

Prepaid Expenses and Other Current Assets

		December 31,
		2022				2021
Prepaid insurance		$	92,644			$	94,923
Product certification costs			87,293				61,557
Prepaid inventory purchases			196,512				131,635
Prepaid maintenance contracts and other prepaid expenses			240,739				107,046
Prepaid expenses and other current assets		$	617,188			$	395,161

Customers who accounted for at least 10% of the Company's accounts receivable balances

		December 31,
		2022				2021
Bluestar, Inc.			46	%			21	%
Ingram Micro Inc.			14	%			28	%
Nippon Primex, Inc.			14	%			*
ScanSource, Inc.			11	%			24	%
* Customer accounted for less than 10% of the Company’s accounts receivable balances

Warranty

Year				Balance at Beginning of Year				Additional Warranty Reserves				Amounts Charged to Reserves				Balance at End of Year
	2022			$	78,871			$	14,475			$	(14,475	)		$	78,871
	2021			$	78,871			$	13,910			$	(13,910	)		$	78,871

Net Inome (Loss) Per Share Applicable to Common Stockholders

		Years Ended December 31,
		2022				2021
Numerator:
Net income		$	86,931			$	4,466,257
Net income allocated to restricted stock award			(8,820	)			(380,547	)
Adjusted net income for basic earnings per share		$	78,111			$	4,085,710
Convertible note interest			—				175,876
Adjusted net income before interest for diluted earnings per share		$	78,111			$	4,261,586
Denominator: Weighted average shares outstanding used in computing net income per share:
Basic			7,184,847				6,991,194
Fully diluted			7,532,924				8,923,487
Net income per share applicable to common stockholders:
Basic		$	0.01			$	0.58
Fully diluted		$	0.01			$	0.48

Revenues for geographic areas (in $'000)

		Years Ended December 31,
Revenues: (in thousands)		2022				2021
United States		$	15,765			$	17,455
Europe			2,612				3,493
Asia and rest of world			2,861				2,251
Total		$	21,238			$	23,199

Customers who accounted for at least 10% of total revenues

		Years Ended December 31,
		2022				2021
Ingram Micro Inc.			26	%			30	%
BlueStar, Inc.			24	%			23	%
ScanSource, Inc.			11	%			11	%

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