In the most basic sense, a Point of sale (POS) system is a Glorified Cash Register. The most basic POS system consists of a computer,a cash drawer,receipt printer, a monitor, and an input device such as a keyboard or scanner. Point of sale (POS) can do some incrediblethings for your retail business and can help you to improve your Business. It tracks inventory, creates accurate pricing, and generatesreports in seconds
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http://www.laxmisoftware.com/POS_System/index.html