Code 128 Barcodes in LEADTOOLS

LEADTOOLS Code 128 Barcode Symbols

Code 128

Sample Barcode:

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.

Leadtools.Barcode support:

LEADTOOLS symbology identifier	BarcodeSymbology.Code128 and for read only, BarcodeSymbology.UCCEAN128
Data class	BarcodeData
Read options	OneDBarcodeReadOptions
Write options	OneDBarcodeWriteOptions

Supports all character subsets A, B, and C
Double Density mode (Character set C)
Subset switching compression mechanism that allows representing large amounts of barcode data with smaller ones
Options to Create/Write barcode that fit 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.