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Barcode CCD Scanner A Bar Code is just a different way of encoding numbers and letters by using a combination of bars and spaces of varying widths. This is just another way of entering data into a computer. A bar code does not contain descriptive data. It is a reference number that a computer uses to look up an associated record that contains descriptive data and other important information. When this number is scanned by the cashier at the check-out, it is transmitted to the computer which finds the record associated with that item number in the data base. The matching item record contains a description of the product, vendor name, price, or quantity-on-hand. The computer instantly does a "price lookup" and displays the price on the cash register. It also subtracts the quantity purchased from the quantity-on-hand. This entire transaction is done instantly. In a nutshell, a bar code typically has ID data encoded in it, and that data is used by computer to look up all specific information associated with the data.     This product was added to our catalog on Tuesday 10 February, 2009. Customers who bought this product also purchased Barcode Laser Scanner Magnetic Swipe Reader-Mini Restaurant POS System Training & Support SPRT POS-88IV - Thermal Printer SPRT POS-90 - Thermal Kitchen Printer

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