Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Aug. 29, 2020	Aug. 24, 2019
CASH FLOWS FROM OPERATING ACTIVITES:
Net income	$ 1,310	$ 2,245
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation	285	281
Loss on disposal of equipment	23
Change in right of use of asset	24
Deferred tax	(5)
Changes in certain current assets and liabilities
Accounts receivable	(79)	380
Contract Assets	(87)	(307)
Inventories	(1,939)	(24)
Prepaid expense and other current assets	183	(74)
Prepaid income taxes	(223)	328
Deferred revenue	(204)	(706)
Accounts payable	133	256
Income taxes	19
Lease liabilities	(24)
Accrued compensation	(417)	201
Other accrued liabilities	17	(114)
Net cash (used in) provided by operating activities	(984)	2,466
CASH FLOWS FROM INVESTING ACTIVITIES:
Sale of short term investments	2,089	4,138
Purchase of short term investments		(4,161)
Additions to property, plant and equipment	(395)	(211)
Net cash provided by (used in) investing activities	1,694	(234)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash dividend	(258)	(258)
Proceeds from short term debt	1,924
Repayment of short term debt	(1,924)
Net cash used in financing activities	(258)	(258)
Net change in cash and cash equivalents	452	1,974
Cash and cash equivalents at beginning of period	13,890	10,483
Cash and cash equivalents at end of period	14,342	12,457
Supplemental Cash Flow Disclosure:
Cash paid for income taxes	$ 436	$ 36