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Condensed Balance Sheets - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Current assets:    
   Cash and cash equivalents $ 4,919,968 $ 2,121,763
   Accounts receivable, net 2,468,281 2,112,514
   Inventories, net 4,019,510 3,195,842
   Prepaid expenses and other current assets 775,392 335,386
   Deferred cost on shipments to distributors 179,267 170,016
      Total current assets 12,362,418 7,935,521
Property and equipment:    
   Machinery and office equipment 2,395,518 2,286,268
   Computer equipment 1,597,771 1,412,030
 Property and equipment, gross 3,993,289 3,698,298
   Accumulated depreciation (3,138,075) (2,850,635)
      Property and equipment, net 855,214 847,663
Intangible assets, net 1,877,609
Other long-term assets 135,076 159,039
Deferred tax assets 7,376,934 5,506,934
Operating lease right-of-use asset 413,810 609,331
      Total assets 23,021,061 15,058,488
Current liabilities:    
   Accounts payable and accrued expenses 1,722,750 1,372,701
   Accrued payroll and related expenses 648,352 375,511
   Deferred revenue on shipments to distributors 529,973 450,591
Short term portion of deferred service revenue 20,344 25,522
Note Payable – current portion 500,000
Subordinated convertible notes payable, net of discount 141,566 169,619
Subordinated convertible notes payable, net of discount-related party 1,186,737 1,272,138
Operating lease – current portion 508,328 483,254
Total current liabilities 5,258,050 4,149,336
Long-term portion of deferred service revenue 20,450 28,794
Long-term portion of note payable 375,000
Long-term portion of operating lease 258,097
   Total liabilities 5,653,500 4,436,227
Commitments and contingencies
Stockholders’ equity:    
Common stock, $0.001 par value: Authorized – 20,000,000 shares,  Issued and outstanding – 7,139,084 shares at June 30, 2021 and 6,102,630 shares at December 31, 2020 7,139 6,103
   Additional paid-in capital 65,647,777 61,733,522
   Accumulated deficit (48,287,355) (51,117,364)
      Total stockholders’ equity 17,367,561 10,622,261
         Total liabilities and stockholders’ equity $ 23,021,061 $ 15,058,488