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Note A - The Company and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | December 31, |
|  | 2023 |  |  | 2022 |
Accounts receivable |  | $ | 2,207,311 |  |  | $ | 2,096,569 |
Allowance for doubtful accounts |  |  | (1,005,785 | ) |  |  | (573,785 | )
Accounts receivable, net of allowances for doubtful accounts |  | $ | 1,201,526 |  |  | $ | 1,522,784 |
|  | Balance at Beginning of Year |  |  | Charged to Costs and Expenses |  |  | Deductions from Reserves |  |  | Balance at End of Year |
Year ended December 31, 2023 Allowance for Doubtful Accounts |  | $ | 573,785 |  |  | $ | 750,000 |  |  | $ | (318,000 | ) |  | $ | 1,005,785 |
Year ended December 31, 2022 Allowance for Doubtful Accounts |  | $ | 213,785 |  |  | $ | 360,000 |  |  | $ | - |  |  | $ | 573,785 |
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, |
|  | 2023 |  |  | 2022 |
Selling, general and administrative |  | $ | 209,134 |  |  | $ | 310,017 |
Research, development and engineering |  |  | 56,598 |  |  |  | 77,890 |
|  | $ | 265,732 |  |  | $ | 387,907 |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
Beginning balance |  | $ | 2,596,203 |
Purchases and issuances |  |  | (2,200,000 | )
Day one change in value of hybrid instrument |  |  | (396,203 | )
Ending balance |  | $ | - |

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