Symbol LS 1220, Product Reference Manual

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Glossary-1
Glossary
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
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 can be
decoded.
Bar The dark element in a printed bar code symbol.
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.
Baud Rate 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.
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.