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Specification. Schematic of a barcode (Code 128B). A Code 128 barcode has seven sections: The check symbol is calculated from a weighted sum (modulo 103) of all the symbols. Subtypes. Code 128 includes 108 symbols: 103 data symbols, 3 start symbols, and 2 stop symbols.
Three different code sets or sub types are defined for Code 128 (namely Code 128 A, Code 128 B, and Code 128 C) that determine how the code is interpreted by the barcode scanner.
ISS Code 128 (International Symbology Specification Code 128) is the USS Code 128 barcode symbology with a new feature that allows the encoding of extended ASCII characters for non-English languages.
Key features: 4 different width of bar/space. 3 symbol sets (A, B and C). Symbol set C encodes pairs of digits and is one of the best ways to store large numbers in a linear barcode. Ability to switch between symbol sets. Barcodes include start and stop character plus a built in checksum.
Previously called the UCC-128, the GS1-128 barcode can carry up to 48 characters of information and can include a wide variety of attribute data such as batch/lot information, serial number, expiration date or country of origin.
Code 128 is a high density, alphanumeric barcode commonly used for, but not limited to, shipping labels, ID cards, USPS applications, and some medical applications. It is able to encode upper and lower case letter, numbers, numerous symbols, control characters, and special functions. Code 128 offers a number of benefits for its users.
Code 128, also known as ANSI/AIM 128, ANSI/AIM Code 128, USS Code 128, Uniform Symbology Specification Code 128, is a very capable linear barcode of excellent density, high reliability.