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Glossary (cont.)
Code 3 of 9 (Code 39) - A versatile and widely
used alphanumeric bar code symbology with a set
of 43 characters types, including all upper case
letters, numerals from 0 to 9 , and 7 special
characters (- / . + % $ and space). The code
name is derived from the fact that 3 of 9 elements
representing a character are wide, while the
remaining 6 are narrow.
Decode - To recognize a bar code symbology and
then analyze the content of the specific bar code
scanned.
Default - A standard setting assigned to a
parameter type unless a different setting is
assigned to that parameter.
Depth of field - The distance between the
maximum and minimum plane in which bar code
reader is capable of reading symbols.
EAN (European Article Number) - This
European/International version of the UPC pro-
vides its own coding format and symbology
standards. Element dimensions are specified
metrically. EAN is used primarily in retail.
Encode - To translate data into machine readable
form using the format and conventions of a
specific bar code symbology.
Host Computer - A computer that serves other
terminals in a network, providing such services as
computation, database access, supervisory pro-
grams, and network control.