v3.26.1
Condensed Statements of Cash Flows (Unaudited) - USD ($)
3 Months Ended
Mar. 28, 2026
Mar. 29, 2025
Cash flows from operating activities:    
Net income (loss) $ (294,179) $ 95,962
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:    
Depreciation and amortization 151,198 164,738
Share-based compensation 48,249 122,186
Deferred taxes (82,706) 83,709
Realized gain on sale of marketable securities (29,970) (26,068)
Changes in:    
Inventories, net (1,545,320) (481,767)
Prepaid expenses and other current assets (31,582) 91,222
Accounts payable (25,644) 81,840
Accrued expenses (330,691) 157,653
Deferred revenue 212,535 (64,349)
Net cash (used in) operating activities (291,957) (1,252,723)
us-gaap_PaymentsToAcquireIntangibleAssets 1,300 (0)
Purchases of property and equipment (475,836) (93,070)
Proceeds from sale of marketable securities 5,257,000 518,000
Purchases of marketable securities (3,260,376) (514,845)
Net cash provided by (used in) investing activities 1,519,488 (89,915)
Cash flows from financing activities:    
Proceeds from employee stock options 30,610 0
Payments on note payable 0 (8,130)
Net cash provided by (used in) financing activities 30,610 (8,130)
Net increase (decrease) in cash and cash equivalents 1,258,141 (1,350,768)
Cash and cash equivalents at beginning of period 4,466,198 3,280,687
Cash and cash equivalents at end of period 5,724,339 1,929,919
Supplemental cash flow information:    
Cash paid for interest 0 26
Net exercise of stock options 3,393 0
Trade Accounts Receivable [Member]    
Changes in:    
Accounts receivables 1,456,218 (1,444,442)
Other Receivables [Member]    
Changes in:    
Accounts receivables $ 179,935 $ (33,407)