Xerox 721 Message Manual page 295

GLOSSARY
batch
binary digit (bit)
GLOSSARY-2
asynchronous Transmission in data communications controlled by start and stop
elements at the beginning and end of each character. Thus, time
intervals between transmitted characters may be unequal in
length.
auxiliary menu Menu that contains options not displayed in a window. The
symbol for an auxiliary menu is a box containing three horizontal
lines.
B4 Paper size measuring 250 by 353 mm.
background job Low-priority job, usually batched, that is executed automatically
as system resources become available.
backup file File copied to a storage medium for safekeeping in case the
original is damaged or lost.
band Rectangular area in printer memory into which an image sent to
the printer from a computer is divided.
batch Processing method that accumulates execution tasks
processing Allows for repetitive operations to be performed sequentially on
batched data without much involvement of the computer
operator.
baud Measurement of data rate in bits per second. This term is used
to describe information flow between two devices. Unit of data
transmitting and receiving speed is roughly equal to a single bit
per second. Common baud rates are 110, 300, 1200, 2400,
4800, and 9600.
binary Numbering system based on 2 that uses only the symbols 0 and
1. Binary is used in computers and related devices since
information can be represented with electric pulses (0=off,
1=on). Most computer calculations are binary.
In the binary numbering system, either of the characters 0 or 1.
The "bit" is the base unit of information used by computers. It
can take the form of a magnetized spot, an electric pulse, or a
positive or negative charge. A sequentially stored set of bits
represents a character on a computer.
Multipliers are:
Computer space equivalents are:
1 or 0 byte = 8,192 bits
1 kilobyte (KB) or 1,024 bytes = 8,388,608 bits.
1.5 KB = about 1 single-spaced typed page
30 KB = about 20 typed pages
150 KB = about 100 typed pages
XEROX 4635 LASER PRINTING SYSTEM MESSAGE GUIDE