User's Manual

Glossary 279
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 1 MB. If the computer 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.
UPS
Abbreviation for uninterruptible power supply. A battery-powered unit that
automatically supplies power to your computer in the event of an electrical failure.
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.
UTP
Abbreviation for unshielded twisted pair.
UUID
Acronym for Universal Unique Identification.
V
Abbreviation for volt(s).
VAC
Abbreviation for volt(s) alternating current.