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NOTE 1 — Organization and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Activities in allowance for doubtful accounts
                 
Year   Balance at
Beginning of Year		   Charged to
Costs and
Expenses		   Amounts
Written Off		   Balance at
End of
Year
  2023     $ 40,651     $ —       $ —       $ 40,651  
  2022     $ 40,651     $ —       $ —       $ 40,651  
Inventory Components
                 
    December 31,
    2023   2022
Raw materials and sub-assemblies   $ 5,839,176     $ 6,193,453  
Finished goods     500,814       289,181  
Inventory reserves     (930,943 )     (880,943 )
Inventory, net   $ 5,409,047     $ 5,601,691  
Prepaid Expenses and Other Current Assets
                 
    December 31,
    2023   2022
Prepaid insurance   $ 75,626     $ 92,644  
Product certification costs     75,604       87,293  
Prepaid inventory purchases     123,736       196,512  
Prepaid maintenance contracts and other prepaid expenses     165,764       240,739  
Prepaid expenses and other current assets   $ 440,730     $ 617,188  
Customers who accounted for at least 10% of the Company's accounts receivable balances
                 
    December 31,
    2023   2022
Ingram Micro Inc.     20 %     14 %
Synnex Corporation     14 %     *  
ScanSource, Inc.     13 %     11 %
Nippon Primex, Inc.     11 %     14 %
Bluestar, Inc.     *       46 %
* Customer accounted for less than 10% of the Company’s accounts receivable balances
Warranty
                 
Year   Balance at
Beginning of Year		   Additional Warranty Reserves   Amounts
Charged to Reserves		   Balance at
End of
Year
  2023     $ 78,871     $ 13,417     $ (13,417 )   $ 78,871  
  2022     $ 78,871     $ 14,475     $ (14,475 )   $ 78,871  
Net Inome (Loss) Per Share Applicable to Common Stockholders
                 
    Years Ended December 31,
    2023   2022
Numerator:        
   Net income (loss)   $ (1,919,154 )   $ 86,931  
   Net income (loss) allocated to restricted stock award     —         (8,820 )
   Adjusted net income (loss) for basic earnings per share   $ (1,919,154 )   $ 78,111  
   Convertible note interest     —         —    
   Adjusted net income (loss) before interest for diluted earnings per share   $ (1,919,154 )   $ 78,111  
 Denominator: Weighted average shares outstanding used in computing net income (loss) per share:                
          Basic     7,230,074       7,184,847  
          Dilutive impact of stock compensation awards     —         348,077
          Fully diluted     7,230,074       7,532,924  
 Net income (loss) per share applicable to common stockholders:                
          Basic   $ (0.27 )   $ 0.01  
          Fully diluted   $ (0.27 )   $ 0.01  
Revenues for geographic areas (in $'000)
               
    Years Ended December 31,
Revenues: (in thousands)   2023   2022
   United States   $ 12,539     $ 15,765  
   Europe     2,426       2,612  
   Asia and rest of world     2,069       2,861  
   Total   $ 17,034     $ 21,238  
Customers who accounted for at least 10% of total revenues
         
    Years Ended December 31,
    2023   2022
Ingram Micro Inc.   22%   26%
BlueStar, Inc.   22%   24%
ScanSource, Inc.   14%   11%
*Customer accounted for less than 10% of total revenues