The Code 128 symbol is a very high-density linear barcode used in a wide variety of shipping and packaging industries around the world. It is able to encode all 128 ASCII characters through the use of multiple character code sets and special command codes.
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Overview of LEADTOOLS Code 128 Barcode SDK Technology
- Supports all character subsets A, B, and C
- Double Density mode (Character set C)
- Subset switching compression mechanism that allows representing large amount of barcode data by smaller ones
- Options to Create/Write barcode that fits perfectly in your application
Code 128 Character Sets
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 of 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.
LEADTOOLS Code 128 Encoded Data Structures
 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.
Major Types of Linear 1D Barcode
Other LEADTOOLS SDK Technologies Related to Code 128 BarcodeLEADTOOLS SDK Products that Include Code 128 Barcode SDK TechnologyHover over each product for a description. Click for more details.
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