The code sets differ in compactness and encodable character set.Ĭode 128 A: Partial ASCII set, no lower case, but ASCII control chars (TAB, CR/LF etc.)Ĭode 128 B: Full ASCII set, no ASCII control charsĬode 128 C: Only digits 0-9, encoded in pairs, very compact code Three different code sets are defined for Code 128 (dubbed A, B, and C) that determine how the code is interpretedīy the barcode scanner. SeeĬode 128 GS1 for a discussion of Code 128 GS1 but read this page first.) Code 128 code sets A, B, C and start characters UPS) and in retail as Code 128 EAN / UCC (This variation is now known as 128 GS1. This barcode symbology is widely used for warehouse management, in the transport industry (e.g. Code 128 was developed by Computer Identics in 1981 and has become very popular over the years.
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