Code 128 Barcodes in LEADTOOLS

The Code 128 symbol is a very high-density linear barcode used in a wide variety of shipping and packaging industries around the world.

Sample Barcode

Symbology
BarcodeSymbology.Code128		The Code 128 barcode can encode all 128 ASCII characters through the use of multiple character code sets and special command codes.

Barcode Support

Features

• Supports all character subsets (A, B, and C). By utilizing three characters sets, Code 128 is able to encode all 128 ASCII characters in a compact linear barcode. Special control characters allow for temporary switching between character sets.

  • Character Set A includes all the standard upper case alphanumeric keyboard characters, plus ASCII control characters and special characters.
  • Character Set B also contains all the standard upper and lower case alphanumeric keyboard characters and special characters.
  • Character Set C, also known as Double-Density Mode, is composed of 100 pairs of digits from 00 to 99, and special characters. This enables numeric-only data to be represented with twice the density.

• Subset-switching compression mechanism that allows representing large amounts of barcode data with smaller ones.

• Options to create/write barcodes that fit perfectly in your application.

Code 128 Encoded Data Structures

There are several specialized data structures that use Code 128 encoding.

GS1-128 / UCC-128 / EAN-128 / Code 128

GS1-128, also known as UCC/EAN-128, UCC-128 and EAN-128, is a specialized, self-describing data structure conveyed as a Code 128 symbol. This means that not only does the Code 128 symbol store the data, but also stores what the data represents and how it should be formatted. This is done with the use of "Application Identifiers" defined in the EAN-128 standard.

UCC/EAN-14 / GTIN-14 / DUN-14

UCC/EAN-14 is a specialized data structure usually consisting of 13 alphanumeric characters and a check digit. EAN-14 symbols have a similar application usage as compared to the EAN-13 symbol.

SISAC

SISAC is a specialized data structure represented as a Code 128 symbol. The data structure that is stored is a SISAC-encoded Serial Item and Contribution Identifier and is used to represent periodical items such as magazines.