Rockwell Automation 2755 AdaptaScan Bar Code Readers - Manual (Page 80)

Glossary G–2
B
bar
The dark element of a printed bar code.
bar code
An array of parallel rectangular bars and spaces that together
represent data elements or characters in a particular symbology. The
bars and spaces are arranged in a predetermined pattern following
unambiguous rules defined by the symbology.
bar code density
The number of characters which can be represented in a linear inch.
bar code label
A label that carries one or more bar code symbols and is suitable to
be affixed to an article.
bar code symbol
A group of bars that represent a character or group of characters
whose width and spacing is determined by a set of rules. In most
cases, human readable characters are printed below the bars.
bar height
The bar dimension perpendicular to the bar width.
bidirectional decoding
A bar code symbology that can be read successfully independent of
scanning direction.
bit
Binary digit. The smallest unit of information in the binary
numbering system. A bit is represented by the digits 0 and 1.
bridge
An interface between links in a communication network that routes
messages from one link to another when a station on one link
addresses a message to a station on another link.
byte
A string of 8 bits, operated on as a unit.