Motorola Symbol LS4278 Product Reference Manual page 397

Glossary
A
Aperture. The opening in an optical system defined by a
lens or baffle that establishes the field of view.
ASCII. American Standard Code for Information
Interchange. A 7 bit-plus-parity code representing 128
letters, numerals, punctuation marks and control
B
Bar. The dark element in a printed bar code symbol.
Bar Code. A pattern of variable-width bars and spaces
which represents numeric or alphanumeric data in
machine-readable form. The general format of a bar
code symbol consists of a leading margin, start
character, data or message character, check character
(if any), stop character, and trailing margin. Within this
framework, each recognizable symbology uses its own
unique format. See Symbology.
Bar Code Density. The number of characters represented
per unit of measurement (e.g., characters per inch).
Bar Height. The dimension of a bar measured
perpendicular to the bar width.
Bar Width. Thickness of a bar measured from the edge
closest to the symbol start character to the trailing edge
of the same bar.
characters. It is a standard data transmission code in
the U.S.
Autodiscrimination. The ability of an interface controller to
determine the code type of a scanned bar code. After
this determination is made, the information content is
decoded.
Bit. 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.
Bits per Second (bps). Bits transmitted or received.
Bluetooth. A technology that provides a way to connect
and exchange information between devices such as
scanners, mobile phones, laptops, PCs, and printers
over a secure, globally unlicensed short-range radio
frequency.
Boot or Boot-up. The process a computer goes through
when it starts. During boot-up, the computer can run
self-diagnostic tests and configure hardware and
software.
bps. See Bits Per Second.