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304 Glossary
SXGA — super-extended graphics array — A video standard for video cards and
controllers that supports 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 allows 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
TAPI — telephony application programming interface — Enables Windows 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. Text 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 surge suppression and may also provide voltage regulation.
Small UPS systems provide battery power for a few minutes to enable you to shut