NOTE 7. INCOME TAXES: Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Details
Tax expense at U.S. Statutory rate	$ 4,298,193	$ 5,689,294
State income taxes, net of Federal benefit	180,115	180,091
Research & development and manufacturing tax credits	(68,894)	(255,713)
Tax effect of Foreign-derived intangible income deduction	(1,125,817)	(1,265,055)
Other	59,289	49,762
Income tax provision	$ 3,342,886	$ 4,398,379