Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
Nov. 30, 2011	Nov. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 871,923	$ 434,562
Depreciation and amortization	238,320	225,448
Stock based compensation expense	37,317	38,819
Allowance for doubtful accounts	9,000	7,000
Decrease (Increase) in:
Accounts receivable	334,610	100,017
Inventories	(984,566)	(136,502)
Prepaid expenses and other current assets	50,146	(24,652)
(Decrease) Increase in:
Accounts payable and accrued expenses	(73,724)	(109,942)
Customer deposits	32,638	425,330
Net Cash Provided by Operating Activities	515,664	960,080
CASH FLOW FROM INVESTING ACTIVITIES:
Patent application costs	(10,110)	(9,192)
Purchase of equipment and furnishings	(148,626)	(147,315)
Net Cash (Used In) Investing Activities	(158,736)	(156,507)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	580	2,960
Proceeds from equipment financing - bank	237,000
Repayment of line of credit - bank		(350,000)
Repayments of notes payable and loans	(70,726)	(12,925)
Net Cash (Used In) Provided by Financing Activities	166,854	(359,965)
NET INCREASE IN CASH AND CASH EQUIVALENTS	523,782	443,608
CASH AND CASH EQUIVALENTS
Beginning of period	1,683,801	1,787,516
End of period	2,207,583	2,231,124
SUPPLEMENTAL DISCLOSURE:
Interest paid	88,895	6,406
Taxes Paid	$ 1,021	$ 216

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).