UPC-A is used for marking products that are sold at retail to the public. The bar code identifies the manufacturer and specific product so point-of-sale (POS) cash register systems can automatically look up the price. UPC-E is a variation of the UPC-A symbol that is used for number system 0. By suppressing zeroes, UPC-E codes can be printed in a very small space and are used for labeling small items. The Uniform Code Council of Dayton, Ohio controls the UPC-A Code and the assignment of manufacturer ID numbers in the United States.
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