Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022
Cash flows from operating activities:
Net income (loss)	$ 1,059,704	$ 874,544
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Depreciation and amortization	252,969	211,641
Share-based compensation	147,757	163,855
Changes in:
Accounts receivable-trade	(1,296,584)	333,048
Accounts receivable-other	611,028
Inventories	62,148	(754,117)
Prepaid expenses and other current assets	(77,073)	(87,628)
Accounts payable	522,667	(478,973)
Accrued expenses	40,658	(438,249)
Deferred taxes	405,404	341,258
Deferred revenue	(892,803)
Net cash provided by operating activities	835,875	210,784
Cash flows from investing activities:
Purchases of property and equipment	(433,579)	(291,631)
Net cash used in investing activities	(433,579)	(291,631)
Cash flows from financing activities:
Proceeds from exercise of employee stock options, net of repurchases	33,615	154,724
Proceeds from issuance of common stock, net of expenses		(17,758)
Payments on note payable	(21,439)	(30,149)
Net cash provided by financing activities	12,176	106,817
Net increase in cash and cash equivalents	414,472	25,970
Cash and cash equivalents at beginning of period	8,266,753	5,050,312
Cash and cash equivalents at end of period	8,681,225	5,076,282
Supplemental disclosures of cash flows information:
Cash paid for interest	2,902	4,353
Cash paid for taxes	79,456	79,456
Supplemental disclosures of non-cash activity:
Net exercise of stock options	$ 71,090	$ 18,334