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Note A - The Company and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | December 31, |
|  | 2022 |  |  | 2021 |
Accounts receivable |  | $ | 2,096,569 |  |  | $ | 1,234,411 |
Loss on foreign currency |  |  | - |  |  |  | (50,000 | )
Allowance for doubtful accounts |  |  | (573,785 | ) |  |  | (213,785 | )
Accounts receivable, net of allowances for doubtful accounts |  | $ | 1,522,784 |  |  | $ | 970,626 |
|  | Balance at Beginning of Year |  |  | Charged to Costs and Expenses |  |  | Deductions from Reserves |  |  | Balance at End of Year |
Year ended December 31, 2022 Allowance for Doubtful Accounts |  | $ | 213,785 |  |  | $ | 360,000 |  |  | $ | - |  |  | $ | 573,785 |
Year ended December 31, 2021 Allowance for Doubtful Accounts |  | $ | 1,733,785 |  |  | $ | 200,000 |  |  | $ | (1,720,000 | ) |  | $ | 213,785 |
Useful Lives of Property Plan and Equipment [Table Text Block] |
| Years |
Equipment and leasehold improvements |  |  |  |  |
Equipment |  | 3 | - | 5 |
Furniture and fixtures |  | 3 | - | 5 |
Software |  |  | 3 |  |
Leasehold improvements |  | life or lease term |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Year ended December 31, |
|  | 2022 |  |  | 2021 |
Selling, general and administrative |  | $ | 310,017 |  |  | $ | 269,368 |
Research, development and engineering |  |  | 77,890 |  |  |  | 45,347 |
|  | $ | 387,907 |  |  | $ | 314,715 |
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block] |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Convertible note at fair value |  | $ | 2,596,203 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,596,203 |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
Beginning balance |  | $ | - |
Purchases and issuances |  |  | 2,200,000 |
Day one loss on value of hybrid instrument |  |  | 396,203 |
Ending balance |  | $ | 2,596,203 |

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