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Glossary
Glossary-14 Using LCDS Print Description Language
synchronous Efficient encoding of data suitable for high-speed, block-oriented
data transmission by using equal time elements.
sysgen system generation
syntax Rules governing the structure of expressions in a programming
language.
system controller Part of the system that provides interfacing capability, data
handling, formatting, buffering, and operator control for the
system.
tape density Number of characters that can be stored on magnetic media,
such as how close together data can be recorded. The Xerox
LPS may use either 1600 bpi or 6250 bpi density magnetic
media.
task 1. Any major job performed by a computer. 2. One of several
programs being executed by a system.
teleprocessing Sending and receiving data through telecommunication lines for
processing among various remote terminals and the central
processing unit (CPU).
throughput In data processing systems, the amount of data that can be
processed, transmitted, printed, and so on, per a specified unit of
time.
TL/DL text line/display list
TOF top of form
tpi tracks per inch
TPJ test pattern job
trailer In data communications, the last portion of a message that
signals the end.
transaction
processing
Method of data processing in which files are updated and results
are generated immediately after data entry.
truncated Cut off before completion, as when data transfer from a host to a
printer is cut off before all data has been transmitted.
two-up Application that prints two logical pages on one side of a physical
page.
typeface 1. All type of a single design. 2. Set of characters with design
features that make them similar to one another.
type size Height of a typeface, measured from the bottom of its
descenders to the top of its ascenders, expressed in points.
type style Italic, condensed, bold, and other variations of typeface that form
a type family.