Code 128

Code 128 is a very high density alphanumeric bar code. The symbol can be as long as necessary to store the encoded data. It's designed to encode all 128 ascii characters.

Each data character encoded in code 128 is made up of 11 black or white modules. The stop character, however, is made up of 13 modules. There are 106 different 3 bar/3 space combinations. Each of the 106 combinations can be assigned one of three different character set meanings. Using one of three different start characters sets these meanings. Start code A allows encoding all the standard alphanumeric key board characters plus control characters and special characters. Start code B includes all standard alphaumeric key board characters plus lower case alpha and special characters. Start code C includes a set of 100 digit pairs from 00 to 99 and can be used to double the density of encoding numeric-only data.

Linear barcode activex control supports code 128(A, B, C) bar code.