Note 7 - Stock-based Compensation
3 Months Ended
Jun. 30, 2021
Notes to Financial Statements  
Share-based Payment Arrangement [Text Block]

NOTE 7. STOCK-BASED COMPENSATION
     Stock-based compensation expense was $7,238 for the first quarter of fiscal 2022 and $2,707 for the first quarter of fiscal 2021. We calculate the share-based compensation expense using the Black-Scholes standard option-pricing model.