Code 93 was designed to complement and improve upon Code 39. Code 93 is similar in that it, like Code 39, can represent the full ASCII character set by using combinations of 2 characters. It differs in that Code 93 is a continous, variable-length symbology and produces denser code. Code 93 offers higher information density for alphanumeric data than either Code 39 or Code 128. What kind of data can be encoded by Code 93? The Standard Mode (Default implementation) can encode uppercase letters (A through Z), digits (0 through 9) and a handful of special characters like the *, -, $, %, (Space), ., /, and + The Full ASCII Mode or Extended Version can encode all 128 ASCII characters The * (asterisk) is not a true encodable character, but is the start and stop 'symbol' for Code 93.
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