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GLOSSARY
XEROX 4635 LASER PRINTING SYSTEM INSTALLATION PLANNING GUIDE GLOSSARY-5
CPU central processing unit. Interprets and executes instructions,
performs all operations and calculations, and controls input and
output units and auxiliary attachments.
data 1. In general, facts, numbers, letters, symbols, and so on, which
can be processed or produced by a computer. 2. In data
processing, the source data or raw data entered for processing,
as opposed to the results obtained by processing.
database Information to meet specific processing and retrieval needs.
Generally applies to integrated file of data, arranged for access by
many subsystems.
data communications Transmission and reception of encoded information over
telecommunication lines.
data link Physical means of connecting one location with another for
communication, such as the communications lines, modems, and
controls which transmit information between two or more
stations.
data processing Operations carried out on data by means of algorithms and
programs to produce information or a specific result. The
rearrangement of data into a suitable form for further use.
data storage Preservation of data on various media, for example, tape, disks,
magnetic bubble memory, and so on.
data transmission Transmission of coded data over telephone or other
telecommunication lines.
debug To detect and correct errors in a program.
decompose To break down into component parts, such as when Interpress
breaks down a Font Interchange Standard (FIS) master to compile
font information.
default Value assigned to a field by the system. Default fields may be
used for such items as document formats, menu selections, input
fields, font selection, and paper or image size. The default value
of a field may be changed.
desktop Basic display screen of the PC UI.
device Any piece of hardware other than the central processing unit
(CPU).
digitize To express or represent data in digital (binary) form so that it can
be processed electronically.
disk drive Device that can read or write magnetic media.