![]() ![]() When the stop pattern is read left-to-right (the usual case), the stop symbol (followed by a 2-module bar) is recognized. The stop pattern permits bidirectional scanning. ![]() The stop pattern is composed of two overlapped symbols and has four bars. ![]() Each bar and space is 1 to 4 modules wide, and the symbols are fixed width: the sum of the widths of the three black bars and three white bars is 11 modules. All widths are multiples of a basic "module". Each symbol consists of three black bars and three white spaces of varying widths. The check symbol is calculated from a weighted sum ( modulo 103) of all the symbols.Ĭode 128 includes 108 symbols: 103 data symbols, 3 start symbols, and 2 stop symbols. Final bar (often considered part of the stop symbol).Specification Schematic of a barcode (Code 128B).ġ:quiet zone, 2:Start Code B, 3:data, 4:checksum, 5:stop GS1-128 (formerly known as UCC/EAN-128) is a subset of Code 128 and is used extensively worldwide in shipping and packaging industries as a product identification code for the container and pallet levels in the supply chain. A GS1-128 barcode encoding GTIN, best before date and batch number Code 128 was developed by the Computer Identics Corporation in 1981. It generally results in more compact barcodes compared to other methods like Code 39, especially when the texts contain mostly digits. It can encode all 128 characters of ASCII and, by use of an extension symbol (FNC4), the Latin-1 characters defined in ISO/IEC 8859-1. It is used for alphanumeric or numeric-only barcodes. JSTOR ( November 2022) ( Learn how and when to remove this template message)Ī Swiss postal barcode encoding "RI 476 394 652 CH" in Code 128 (B & C)Ĭode 128 is a high-density linear barcode symbology defined in ISO/IEC 15417:2007.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |