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GLOSSARY
GLOSSARY-2 XEROX 4890 HIGHLIGHT COLOR LPS INSTALLATION PLANNING REFERENCE
batch processing Process that allows for repetitive operations to be performed
sequentially on batched data without much involvement from the
computer operator.
background job Low-priority job, usually batched, which is executed automatically
as system resources become available.
baud Measurement of data flow between devices in bits per second.
Common baud rates are 110, 300, 1200, 2400, 4800, and 9600.
BCD Binary coded decimal.
binary Numbering system with a base of 2. All numbers are
represented by combinations of 1 and 0.
binary synchronous communication See BSC.
binary synchronous transmission Data transmission where synchronization of characters is
controlled by timing signals generated at the sending and
receiving stations.
bit Abbreviation for binary digit, the smallest unit of information
recognized by a computer.
bitmap Visual representation of graphic images in which a bit defines a
picture element (pixel) and a matrix of bits defines an image. For
example, if a bit is 1, the corresponding pixel is printed.
bitmapped Display image generated bit by bit for each point or dot. A
software-driven scanner is used to create characters and/or
graphics.
bits per second See bps.
block length Number of characters or bytes contained in a block of data (the
block is treated as a unit within the computer). Block length is
usually invariable within a system and may be specified in units
such as records, words, computer words, or characters.
blocking Process of combining two or more records into a single block of
data which can moved, operated upon, stored, and so on, as a
single unit by the computer.
BOF Bottom of form.
boot To load the initial instructions of a program into memory. These
instructions direct the loading of the operating system and
application software.
BOT Beginning of tape.