Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
Aug. 31, 2011	Aug. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 676,120	$ 220,640
Depreciation and amortization	154,420	143,129
Stock based compensation expense	25,829	26,528
Allowance for doubtful accounts	6,000	4,000
Decrease (Increase) in:
Accounts receivable	30,462	22,074
Inventories	(799,330)	(142,337)
Prepaid expenses and other current assets	(40,531)	(60,767)
(Decrease) Increase in:
Accounts payable and accrued expenses	81,421	(415,741)
Customer Deposits	168,668	294,217
Net Cash Provided by Operating Activities	303,059	91,743
CASH FLOW FROM INVESTING ACTIVITIES:
Patent application costs	(4,760)	(6,797)
Purchase of equipment and furnishings	(112,563)	(59,807)
Net Cash Used In Investing Activities	(117,323)	(66,604)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	358
Proceeds from equipment financing - bank	237,000
Repayments of notes payable and loans	(41,033)	(9,171)
Net Cash Provided by (Used In) Financing Activities	196,325	(9,171)
NET INCREASE IN CASH AND CASH EQUIVALENTS	382,061	15,968
CASH AND CASH EQUIVALENTS
Beginning of period	1,683,801	1,787,516
End of period	2,065,862	1,803,484
SUPPLEMENTAL DISCLOSURE:
Interest paid	59,368	5,819
Taxes Paid	$ 253	$ 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).