Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
May 31, 2012	May 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 11,100	$ 238,595
Depreciation and amortization	83,576	73,889
Stock based compensation expense	10,964	12,943
Allowance for doubtful accounts	3,000	3,000
Decrease (Increase) in:
Accounts receivable	(307,798)	(225,723)
Inventories	26,561	(311,545)
Prepaid expenses and other current assets	(5,483)	23,451
(Decrease) Increase in:
Accounts payable and accrued expenses	28,175	(6,763)
Customer deposits	(45,109)	196,035
Income taxes payable	(30,866)
Net Cash (Used In) Provided by Operating Activities	(225,880)	3,882
CASH FLOW FROM INVESTING ACTIVITIES:
Patent application costs	(24,115)	(2,110)
Purchase of equipment and furnishings	(9,412)	(42,536)
Purchase of marketable securities	(400,106)
Net Cash (Used In) Investing Activities	(433,633)	(44,646)
CASH FLOW FROM FINANCING ACTIVITIES:
Repayments of notes payable and loans	(29,862)	(17,242)
Proceeds from exercise of options	9,006
Net Cash (Used In) Provided by Financing Activities	(20,856)	(17,242)
NET (DECREASE) IN CASH AND CASH EQUIVALENTS	(680,369)	(58,006)
CASH AND CASH EQUIVALENTS
Beginning of period	2,531,689	1,683,801
End of period	1,851,320	1,625,795
SUPPLEMENTAL DISCLOSURE:
Interest paid	28,970	29,773
Taxes Paid	$ 38,848	$ 0

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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).