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motherboard: A name sometimes used to refer to the main printed circuit
MPEG: Moving picture coding expert group is an industry standard
N
non-system disk: A formatted diskette (floppy disk) you can use to store
nonvolatile memory: Memory, usually read-only (ROM), that is capable of
numeric keypad overlay: A feature that allows you to use certain keys on
O
OCR: Optical Character Recognition (reader). A technique or device that
OCR wand: A device that reads, using an optical device, hand written or
on-line state: A functional state of a peripheral device when it is ready to
operating system: A group of programs that controls the basic operation
output: The results of a computer operation. Output commonly indicates
TOSHIBA TE2300
board in processing equipment. It usually contains integrated
circuits that perform the processor's basic functions and provides
connectors for adding other boards that perform special functions.
Sometimes called a main board.
architecture for compression of video signals.
programs and data but you cannot use to start the computer. See
system disk.
permanently storing information. Turning the computer's power off
does not alter data stored in nonvolatile memory.
the keyboard to perform numeric entry, or to control cursor and
page movement.
uses laser or visible light to identify characters and input them into
a storage device.
machine printed symbols into a computer. See also OCR.
receive or transmit data.
of a computer. Operating system functions include interpreting
programs, creating data files, and controlling the transmission and
receipt (input/output) of data to and from memory and peripheral
devices.
data
1) printed on paper,
2) displayed at a terminal,
3) sent through the serial port of internal modem, or
4) stored on some magnetic media.
Glossary
11
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