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Condensed Statements of Cash Flows - USD ($)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Operating activities    
  Net loss $ (557,415) $ (993,420)
  Adjustments to reconcile net loss to net cash (used in) provided by operating activities:    
      Stock-based compensation 272,700 295,833
      Depreciation and amortization 252,298 200,189
      Amortization of debt discount 1,462 8,273
      Amortization of operating lease ROU asset 120,792 115,832
  Changes in operating assets and liabilities:    
      Accounts receivable (373,345) 165,148
      Inventories (4,379) (58,239)
      Prepaid expenses and other current assets 60,522 60,836
      Other assets 1,000
      Accounts payable and accrued expenses 143,885 515,883
      Accrued payroll and related expenses 56,490 (144,040)
      Net deferred revenue on shipments to distributors 45,626 45,793
      Deferred service revenue 1,014 (367)
      Net change in operating lease liability (115,540) (106,056)
         Net cash (used in) provided by operating activities (94,890) 105,665
  Purchases of equipment and intangible assets (56,442) (466,106)
  Proceeds from tenant improvements allowance 72,800
       Net cash provided by (used in) investing activities 16,358 (466,106)
Financing activities    
  Common stocks repurchased and related expenses (208,425)
  Repayments of note payable (125,000)
  Proceeds from stock options exercised 23,750 33,705
       Net cash provided by (used in) financing activities 23,750 (299,720)
Net decrease in cash and cash equivalents (54,782) (660,161)
Cash and cash equivalents at beginning of period 2,826,630 3,623,469
Cash and cash equivalents at end of period 2,771,848 2,963,308
Supplemental disclosure of cash flow information    
  Cash paid for interest 104,795 36,030
Supplemental disclosure of non-cash activities    
  Property acquired under operating lease $ 8,230