symbologyA symbology is a protocol for arranging the bars and spaces that make up a particular kind of bar code . There is no one standard bar code; instead, it's estimated that there are currently over 400 barcode symbologies that serve different uses, industries, or geographic needs. Symbologies can be designed to encode numbers, letters, special character control characters, or a combination of any of the three. There are generally two kinds of barcode symbologies; discrete and continuous. A discrete symbology is one where every character in the bar code can be interpreted individually without referencing the rest of the bar code. A continuous symbology is one where individual characters in the bar code cannot be interpreted individually. Most barcode readers have a feature called "auto-discrimination", which allows them to be configured to automatically recognize and read different barcode symbologies, much the same way a human reader can interpret and read different font types.
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| Last updated on:
Sep 21, 2005 |
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