Note 9 - Income Taxes - Components of Net Deferred Tax Assets (Details) - USD ($)	Dec. 31, 2022	Dec. 25, 2021
Deferred Tax Assets:
Net operating loss carryforwards	$ 132,632	$ 1,050,449
Stock compensation	209,092	157,845
Credit carryforwards	1,253,956	1,285,119
Inventory	80,628	77,563
Accrued liabilities	5,071	12,390
Depreciation	179,481	237,880
Capitalized R&D, net	205,878	0
Other	2,698	2,732
Net deferred tax assets	$ 2,069,436	$ 2,823,978

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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