GLOSSARY
background job
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 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.
binary digit (bit) 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:
1 or 0 byte = 8,192 bits
kilobyte (KB) or 1,024 bytes = 8,388,608 bits.
Computer space equivalents are:
1.5KB = about 1
150 KB = about 100 typed pages
binary synchronous transmission Data transmission in which 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. See also binary digit.
bit map Visual representation of graphic images in which a bit defines a picture element (pixel); for example, if a bit is 1, the corresponding pixel is printed.
bit mapped Display image generated bit by bit for each point or dot. A software- driven scanner is used to create characters or graphics.
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