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Technologies:
>> Barcode Since
their invention more than 50 years ago, barcode have been
enablers for accurate data capture, the rapid movement of goods,
and all types of automation. Whether at the Point-of-Sale, in a
hospital, or in a manufacturing environment these little black
and white images deliver incredible value.
>> There are many
different bar code symbologies, or languages. Each symbology has
its own rules for encoding characters (e.g., letter, number,
punctuation), printing, decoding requirements, and error
checking.
>> Barcode
symbologies differ both in the way they represent data and in
the type of data they can encode: some encode numbers; others
encode numbers, letters, and a few punctuation characters; still
others offer encodation of the 128 or 256 ASCII character sets.
Recently unveiled symbologies include options to encode
characters in any language as well as specialized data types.
>> Barcode in
common use are covered by international standards. International
standards also cover print quality measurements and equipment.
Bar code technology
standards define:
*** Rules for
representing data in an optically readable format,
*** Rules and
techniques for printing or marking,
*** Reading and
decoding techniques,
*** Rules for
measuring the quality of printed/marked symbols |