Symbol DS 3478 Product Reference Manual page 390

GL-2 DS 3478 Product Reference Guide
Automatic Identification System
Background
Bar
Bar Code
Bar Code Character
Bar Code Density
Bar Code Reader
Bar Code Symbol
Bar Height
Bar Width
Baud Rate
Bi-directional
Binary
Bit
Class 1 Bluetooth
The application of various technologies, such as bar code
recognition, image recognition, voice recognition and RF/
MW transponders, for the purpose of data entry into a data
processing system and bypassing the key-entry component
of traditional data entry.
The area surrounding a printed symbol including the spaces
and quiet zones.
The dark element in a printed bar code symbol.
An array of parallel rectangular bars and spaces arranged
according to the encodation rules of a particular symbol
specification in order to represent data in machine-
readable form (i.e., Code 39).
A single group of bars and spaces which represent an
individual number, letter, punctuation mark or other symbol.
The number of characters represented per unit of
measurement (e.g., characters per inch).
A device used to read or decode a bar code symbol.
The combination of symbol characters and features
required by a particular symbology, including quiet zones,
start and stop characters, data characters, check characters
and other auxiliary patterns, that together form a complete
scannable entity (see Symbol).
The dimension of a bar measured perpendicular to the bar
width (see Y Dimension).
Thickness of a bar measured from the edge closest to the
symbol start character to the trailing edge of the same bar
(see X Dimension).
A measure of the data flow or number of signaling events
occurring per second. When one bit is the standard "event,"
this is a measure of bits per second (bps). For example, a
baud rate of 50 means transmission of 50 bits of data per
second.
Denotes that a machine-readable symbol can be read
successfully in two directions – either backwards or
forwards. Also identifies a scanner that can operate or a
bar code that can be read independent of scanning
direction.
Denotes a numbering system to base 2 in which numbers
are expressed as combinations of the digits 0 and 1 with
positional weighting based on powers of 2. In computing,
these can be represented electrically by 'off' and 'on'
respectively or in machine-readable symbols by narrow and
wide elements or by the absence or presence of a bar
module.
Binary digit. One bit is the basic unit of binary information.
Generally, eight consecutive bits compose one byte of data.
The pattern of 0 and 1 values within the byte determines its
meaning.
Standard for Bluetooth radio transmission for a range of up
to 100m.