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M
See motherboard.
main board:
Monochrome Display Adapter.
MDA:
Monochrome Display Adapter and its associated circuitry for direct drive TTL
displays that supports a monochrome 720x350 text mode.
A unit of data storage equal to 1024 kilobytes.
megabyte (MB):
kilobyte.
A software interface that displays a list of options on the screen.
menu:
called a screen.
A hardware component contained in a single integrated circuit
microprocessor:
that carries out instructions.
one of the main parts of the computer.
A method of operation, for example, the boot mode or the resume mode.
mode:
Derived from modulator/demodulator, a device that converts (modulates)
modem:
digital data for transmission over telephone lines and then converts modulated
data (demodulates) to digital format where received.
A device that uses rows and columns of pixels to display alphanumeric
monitor:
characters or graphic images.
A name sometimes used to refer to the main printed circuit board
motherboard:
in processing equipment.
the processorÕs basic functions and provides connectors for adding other boards
that perform special functions.
N
non-system disk:
A formatted diskette (floppy disk) you can use to store
programs and data but you cannot use to start the computer.
non-volatile memory:
permanently storing information.
alter data stored in non-volatile memory.
numeric keypad overlay:
keyboard to perform numeric entry, or to control cursor and page movement.
O
Optical Character Recognition (reader).
OCR:
laser or visible light to identify characters and input them into a storage
device.
A device that reads, using an optical device, hand written or machine
OCR wand:
A video display protocol defined by the IBM
Also called the central processing unit (CPU),
CRT.
See
It usually contains integrated circuits that perform
Sometimes called a main board.
Memory, usually read-only (ROM), that is capable of
Turning the computerÕs power off does not
A feature that allows you to use certain keys on the
See also
system disk.
See
A technique or device that uses
Also
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