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

12 Months Ended

Dec. 31, 2021

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
	2021			$	40,651			$	—			$	—			$	40,651
	2020			$	40,651			$	—			$	—			$	40,651

Inventory Components

		December 31,
		2021				2020
Raw materials and sub-assemblies		$	5,757,869			$	3,642,377
Finished goods			277,598				281,104
Inventory reserves			(880,943	)			(727,639	)
Inventory, net		$	5,154,524			$	3,195,842

Prepaid Expenses and Other Current Assets

		December 31,
		2021				2020
Prepaid insurance		$	94,923			$	82,296
Product certification costs			61,557				75,592
Prepaid inventory purchases			131,635				93,859
Prepaid maintenance contracts and other prepaid expenses			107,046				83,639
Prepaid expenses and other current assets		$	395,161			$	335,386

Concentration of Credit Risk

			December 31,
			2021				2020
Ingram Micro, Inc.				28	%			34	%
ScanSource, Inc.				24	%			13	%
BlueStar, Inc.				21	%			29	%
Bluestar Europe Distribution BV				—	*			11	%

Warranty

Year				Balance at Beginning of Year				Additional Warranty Reserves				Amounts Charged to Reserves				Balance at End of Year
	2021			$	78,871			$	13,910			$	(13,910	)		$	78,871
	2020			$	78,871			$	73,734			$	(73,734	)		$	78,871

Net Income (Loss) per Share Applicable to Common Stockholders

		Years Ended December 31,
		2021				2020
Numerator:
Net income (loss)		$	4,466,257			$	(3,278,601	)
Net income (loss) allocated to restricted stock award			(380,547	)			188,375
Adjusted net income (loss) for basic earnings per share		$	4,085,710			$	(3,090,223	)
Convertible note interest			175,876				—
Adjusted net income (loss) before interest for diluted earnings per share		$	4,261,586			$	(2,571,114	)
Denominator: Weighted average shares outstanding used in computing net income (loss) per share:
Basic			6,991,194				6,036,310
Fully diluted			8,923,487				6,036,310
Net income (loss) per share applicable to common stockholders:
Basic		$	0.58			$	(0.51	)
Fully diluted		$	0.48			$	(0.51	)

Revenues for geographic areas (in $'000)

		Years Ended December 31,
Revenues: (in thousands)		2021				2020
United States		$	17,455			$	12,137
Europe			3,493				2,209
Asia and rest of world			2,251				1,354
Total		$	23,199			$	15,700

Customers who accounted for at least 10% of total revenues

			Years Ended December 31,
			2021				2020
Ingram Micro, Inc.				30	%			31	%
BlueStar, Inc.				23	%			23	%
ScanSource, Inc.				11	%			—	*
*	Customer accounted for less than 10% of the Company’s total revenues

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