Users Guide

168 Glossary
time-out
A specified period of system inactivity that must occur
before an energy conservation feature is activated.
tpi
Abbreviation for tracks per inch.
TSR
Abbreviation for terminate-and-stay-resident. A TSR
program runs "in the background." Most TSR programs
implement a predefined key combination (sometimes
referred to as a hot key) that allows you to activate the
TSR program's interface while running another
program. When you finish using the TSR program, you
can return to the other application program and leave
the TSR program resident in memory for later use.
TSR programs can sometimes cause memory conflicts.
When troubleshooting, rule out the possibility of such
a conflict by rebooting your system without starting any
TSR programs.
TSOP
Abbreviation for thin small outline package. A very
thin, plastic, rectangular surface mount chip package
with gull-wing pins on its two short sides.
UDP
Abbreviation for user datagram protocol.
UMB
Abbreviation for upper memory blocks.
unicode
A fixed width, 16-bit world wide character encoding,
developed and maintained by the Unicode
Consortium.
upper memory area
The 384 KB of RAM located between 640 KB and 1MB.
If the system has an Intel386 or higher microprocessor,
a utility called a memory manager can create UMBs in
the upper memory area, in which you can load device
drivers and memory-resident programs.
URL
Abbreviation for Uniform Resource Locator (formerly
Universal Resource Locator).
USB
Abbreviation for Universal Serial Bus. A USB connector
provides a single connection point for multiple
USB-compliant devices, such as mice, keyboards,
printers, and computer speakers. USB devices can also be
connected and disconnected while the system is running.
utility
A program used to manage system resources—
memory, disk drives, or printers, for example.
utility partition
A bootable partition on the hard drive that provides
utilities and diagnostics for your hardware and
software. When activated, the partition boots and
provides an executable environment for the
partition's utilities.
varbind
An algorithm used to assign an object identifier (OID).
The varbind gives rules for arriving at the decimal prefix
that uniquely identifies an enterprise, as well as the
formula for specifying a unique identifier for the
objects defined in that enterprise's MIB.
variable
A component of a managed object. A temperature probe,
for example, has a variable to describe its capabilities, its
health or status, and certain indexes that you can use to
help you in locating the right temperature probe.
VGA
Abbreviation for video graphics array. VGA and SVGA
are video standards for video adapters with greater
resolution and color display capabilities than previous
standards. To display a program at a specific resolution,
you must install the appropriate video drivers and your
monitor must support the resolution. Similarly, the
number of colors that a program can display depends on
the capabilities of the monitor, the video driver, and the
amount of video memory installed for the video adapter.