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GLOSSARY
XEROX 4635 LASER PRINTING SYSTEM INSTALLATION PLANNING GUIDE GLOSSARY-21
tape drive Input/output device that controls the movement of magnetic
storage tape past the read/write head while data is accessed or
stored.
task 1. Any major job performed by a computer. 2. One of several
programs being executed by a system.
telecommunications Voice or data communications transmitted and received through
telephone lines.
teleprocessing Sending and receiving data through telecommunication lines for
processing among various remote terminals and the central
processing unit (CPU).
TEM terminal emulation mode. The processing method of the PC UI
which features a character display and the operator's use of the
keyboard. The mouse, windows, and icons are inactive in this
mode. The PC UI operates in either the TEM mode or in the
object mode. See also object mode.
temporary storage Main memory locations reserved for intermediate results of
processing, control values, or other information which need to
be kept on hand as a program proceeds.
terminal Device equipped with a keyboard and connected to a computer
or a network.
testing 1. Process of running a program for the express purpose of
discovering any errors it may contain. 2. For computer-oriented
systems, the process of verifying a system's ability to meet
performance objectives in a simulated environment or validating
its actual performance in a live environment.
text In communications, the content portion of a transmitted
message.
text string Consecutive series of characters to be printed exactly as
specified in a command.
throughput In data processing systems, the amount of data that can be
processed, transmitted, printed, and so on, per a specified unit
of time.
toggle To switch (alternate) from one tray to another. The system
switches from an active feeder or stacker tray to an inactive one
to allow continuous printing when the proper commands are
invoked.
track Unit of storage space on a data storage medium, such as a disk.
All information stored in a track can be retrieved or recorded in
one positioning of a read/write head.