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Condensed Balance Sheets - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Current assets:    
   Cash and cash equivalents $ 5,352,738 $ 2,121,763
   Accounts receivable, net 2,703,127 2,112,514
   Inventories, net 4,434,536 3,195,842
   Prepaid expenses and other current assets 601,429 335,386
   Deferred cost on shipments to distributors 152,625 170,016
      Total current assets 13,244,455 7,935,521
Property and equipment:    
   Machinery and office equipment 2,439,722 2,286,268
   Computer equipment 1,807,443 1,412,030
Property and equipment, gross 4,247,165 3,698,298
   Accumulated depreciation (3,296,166) (2,850,635)
      Property and equipment, net 950,999 847,663
Intangible assets, net 1,845,785
Other long-term assets 151,174 159,039
Deferred tax assets 7,116,934 5,506,934
Operating lease right-of-use asset 313,293 609,331
      Total assets 23,622,640 15,058,488
Current liabilities:    
   Accounts payable and accrued expenses 1,743,105 1,372,701
   Accrued payroll and related expenses 702,938 375,511
   Deferred revenue on shipments to distributors 390,930 450,591
   Short term portion of deferred service revenue 18,630 25,522
   Note Payable – current portion 500,000
   Subordinated convertible notes payable, net of discount 142,540 169,619
   Subordinated convertible notes payable, net of discount-related party 1,194,036 1,272,138
   Operating lease – current portion 384,180 483,254
      Total current liabilities 5,076,359 4,149,336
Long-term portion of deferred service revenue 17,697 28,794
Long-term portion of note payable 250,000
Long-term portion of operating lease 258,097
   Total liabilities 5,344,056 4,436,227
Commitments and contingencies
Stockholders’ equity:    
Common stock, $0.001 par value: Authorized – 20,000,000 shares, Issued and outstanding – 7,174,363 shares at September 30, 2021 and 6,102,630 shares at December 31, 2020 7,174 6,103
   Additional paid-in capital 65,915,139 61,733,522
   Accumulated deficit (47,643,729) (51,117,364)
      Total stockholders’ equity 18,278,584 10,622,261
         Total liabilities and stockholders’ equity $ 23,622,640 $ 15,058,488