code set A, code set B, code set C, and GS1-128 bar codes
"Code128 barcodes" are usually referred to as "Code 128 barcodes". The name comes from the fact that Code 128 bar codes encode the lower 128 ASCII characters, at least code set A and code set B used together can.
Code 128 can be used for both alpha, numeric, and alphanumeric strings, is extremely compact compared to other symbologies, and uses a check digit to insure data integrity. There are three versions of Code 128: code set A, code set B, and code set C. The various code sets differ in the character sets they can represent. Code set C is number-only and only code set B includes lowercase letters.
Many modern labeling guidelines and specifications mandate Code 128. Code 128 barcodes can be made using C128Tools, barcode fonts from Azalea Software. Buy C128Tools online and download your barcode software right away. It includes free sample code, free tech support, and a 30-day no questions asked money back guarantee.
Code 39 specifications:
ANSI/AIM BC4-1999, ISS - Code 128
AIDC - Code 128
GS1-128
MIL-STD-130L
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