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Glossary-2
G
LOSSARY
analog signal: A signal whose
characteristics such as amplitude and
frequency vary in proportion to (are an
analog of) the value to be transmitted.
Voice communications are analog
signals.
characteristics such as amplitude and
frequency vary in proportion to (are an
analog of) the value to be transmitted.
Voice communications are analog
signals.
ANSI: American National Standards
Institute. An organization established
to adopt and define standards for a
variety of technical disciplines. For
example, ANSI defined the ASCII
standard and other information
processing requirements.
Institute. An organization established
to adopt and define standards for a
variety of technical disciplines. For
example, ANSI defined the ASCII
standard and other information
processing requirements.
antistatic: A material used to prevent
the buildup of static electricity.
the buildup of static electricity.
application: A group of programs
that together are used for a specific
task such as accounting, financial
planning, spreadsheets, word process-
ing and games.
that together are used for a specific
task such as accounting, financial
planning, spreadsheets, word process-
ing and games.
ASCII: American Standard Code for
Information Interchange. ASCII code is
a set of 256 binary codes that represent
the most commonly used letters,
numbers, and symbols.
Information Interchange. ASCII code is
a set of 256 binary codes that represent
the most commonly used letters,
numbers, and symbols.
async: Short for asynchronous.
asynchronous: Lacking regular time
relationship. As applied to computer
communications, asynchronous refers
to the method of transmitting data that
does not require a steady stream of
bits to be transmitted at regular time
intervals.
relationship. As applied to computer
communications, asynchronous refers
to the method of transmitting data that
does not require a steady stream of
bits to be transmitted at regular time
intervals.
(Abbreviations continued)
TFT: thin-film transistor
UART: universal asynchronous
receiver/transmitter
receiver/transmitter
USB: Universal Serial Bus
UXGA: ultra extended graphics array
VESA: Video Electronic Standards
Association
Association
VGA: video graphics array
VRT: voltage reduction technology
XGA: extended graphics array
A
adaptor: A device that provides an
interface between two dissimilar
electronic devices. For example, the
AC adaptor modifies the power from a
wall outlet for use by the computer.
This term also refers to the add-in
circuit cards that control external
devices, such as video monitors and
magnetic tape devices.
interface between two dissimilar
electronic devices. For example, the
AC adaptor modifies the power from a
wall outlet for use by the computer.
This term also refers to the add-in
circuit cards that control external
devices, such as video monitors and
magnetic tape devices.
allocate: To assign a space or
function for a specific task.
function for a specific task.
alphanumeric: Keyboard characters
including letters, numbers and other
symbols, such as punctuation marks or
mathematical symbols.
including letters, numbers and other
symbols, such as punctuation marks or
mathematical symbols.
alternating current (AC): Electric
current that reverses its direction of
flow at regular intervals.
current that reverses its direction of
flow at regular intervals.
Adaptor