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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.
UUID
Abbreviation for Universal Unique Identification.
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.
VESA
Acronym for Video Electronics Standards Association.
virtual memory
A method for increasing addressable RAM by using the
hard drive. For example, in a system with 16 MB of
RAM and 16 MB of virtual memory set up on the hard
drive, the operating system would manage the system
as though it had 32 MB of physical RAM.
VT-100
Abbreviation for Video Terminal 100, which is used by
the most common terminal emulation programs.
WAN
Abbreviation for wide area network.
Web server
A secure port server that makes Web pages available
for viewing by Web browsers using the HTTP protocol.
WH
Abbreviation for watt-hour(s).
win.ini file
A start-up file for the Windows operating system.
When you start Windows, it consults the win.ini file
to determine a variety of options for the Windows
operating environment. Among other things, the
win.ini file records what printer(s) and fonts are
installed for Windows. The win.ini file also usually
includes sections that contain optional settings for
Windows application programs that are installed on
the hard drive. Running the Control Panel or Windows
Setup program may change options in the win.ini file.
On other occasions, you may need to change or add
options to the win.ini file manually with a text editor
such as Notepad.
write-protected
Read-only files are said to be write-protected. You can
write-protect a 3.5-inch diskette by sliding its write-
protect tab to the open position or by setting the
write-protect feature in the System Setup program.
XMM
Abbreviation for extended memory manager, a utility
that allows application programs and operating systems
to use extended memory in accordance with the XMS.
Glossary
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