resolutions
up to
1280
x 1024.
SXGA+ —
super-extended graphics array plus
— A video
standard
for
video cards and controllers
that supports
resolutions
up to
1400
x 1050.
system board
—
The main
circuit
board
in
your
computer.
Also known as
the motherboard.
system setup
— A utility that
serves as an
interface
between
the
computer hardware and
the operating
system. System setup
a
l
lo
ws
you
to
configure
user-
selectable options
in the
BIOS, such as date and
time or
system password. Unless you understand what effect
the
settings have
on the
computer,
do not
change
the settings
for this program.
T
TA
P
I
—
telephony application programming interface
—
Enables
W
i
ndows
programs
to
operate
with
a wide
variety
of
telephony devices,
including
voice, data, fax, and
video.
text editor — A
program used
to
create and
edit
files
that
contain only
text; for
example,
Windows
Notepad
uses a
text editor.
T
e
xt
editors
do not
usually provide word
wrap
or formatting functionality (the option to underline,
change fonts, and so
on).
TPM —
trusted
platform
module
— A
hardware-based
security feature
that
when combined
with security
software enhances network and computer security
by
enabling features such
as
file
and e-mail
protection.
travel module
— A
plastic device designed
to fit inside
the
module bay
of
a portable computer
to
reduce
the
weight
of the computer.
U
UAC —
user account
control— Microsoft Windows
Vista®
security feature
that,
when enabled, provides
an
added layer
of
security between user accounts and access
to
operating system
settings.
UMA — unified
memory allocation
—
System
memory
dynamically allocated
to video.
UPS
— uninterruptible
power supply
— A
backup
power
source used when
the
electrical power fails
or
drops
to an
unacceptable voltage level.
A
UPS keeps a
computer
running for
a
limited
amount
of time
when there is
no
electrical power. UPS systems
typically provide
sur
ge
suppression and may also provide voltage r
e
gulation.
Small UPS systems provide battery power
for
a
few
minutes
to
enable you
to shut
down your
computer.
USB
—
universal serial bus
— A
hardware interface
for
a
low-speed device such as a
USB-compatible k
e
yboar
d
,
mouse, joystick, scanner, set
of
speakers,
printer,
broadband devices
(DSL
and cable modems),
imaging
devices,
or
storage devices. Devices are plugged directly
in
to
a
4-pin
socket
on
your computer
or in to
a
multi-port
hub that
plugs
in to
your computer. USB devices can
be
connected and disconnected while the computer is
turned
on,
and they can also be daisy-chained
together.
UTP —
unshielded twisted
pair —
Describes a type
of
cable used
in
most telephone networks and
some
computer networks. Pairs
of
unshielded
wir
e
s
are
twisted
to
protect against electromagnetic interference,
rather
than
relying on a metal sheath around each pair
of
wires
to
p
r
o
t
ect
against
interference.
UXGA — ultra
extended graphics array
— A video
standard
for
video cards and controllers
that
supports
resolutions
up to
1600
x 1200.
V
video
controller — The circuitry on
a video card
or on the
system board
(in
computers
with
an integrated
video
controller)
that
provides
the
video
capabilities—in
combination
with the monitor—for
your
computer.
video memory
—
Memory
that
consists
of
memory
chips
dedicated
to
video functions. V
i
deo
memory is
usually
faster
than
system memory.
The
amount
of
video
memory
installed
primarily
influences
the
number
of
colors
that
a
program can
display.
video mode
— A
mode
that
describes how
text and
graphics are displayed
on
a
monitor. Graphics-based
software, such as
Windows
operating systems, displays
in
video modes
that
can be defined
as x
horizontal pixels by y
vertical pixels by
z
colors. Character-based software,
such
as
text
editors, displays
in
video modes
that
can
be
defined
as x
columns by y rows
of characters.
Glossary
157
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