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- Mar 28, 2018 -

Can only represent numbers, there are five versions of A, B, C, D, E version A - 12 digit version E - 7 digits The last digit is the check digit size is 1.5" high and 1" wide, and the background should be Clearly used mainly in the United States and Canada, for industrial, pharmaceutical, warehouse and other departments. When UPC is decoded as 12 bits, it is defined as follows: First bit = Digital ID (already established by UCC (Uniform Code Committee)). Bits 2-6 = Manufacturer's identification number (including first digit) 7-11 = Unique manufacturer product code bit 12 = Used for error detection