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Xerox 4112-4127 Enterprise Printing System-192 User Manual

Page 492

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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.