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Note A - The Company and Summary of Significant Accounting Policies - Share-based Compensation Expenses for Continuing Operations (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Share-based compensation expense $ 314,715 $ 792,095
Selling, General and Administrative Expenses [Member]    
Share-based compensation expense 269,368 705,971
Research and Development Expense [Member]    
Share-based compensation expense $ 45,347 $ 86,124