Toshiba Portege 3500, Руководство пользователя

Страница: 234 / 242

Glossary
10 Portégé 3500
megahertz: A unit of wave frequency that equals 1 million cycles per
second. See also hertz.
menu: A software interface that displays a list of options on the screen.
Also called a screen.
microprocessor: A hardware component contained in a single integrated
circuit that carries out instructions. Also called the central
processing unit (CPU), one of the main parts of the computer.
million byte (GB): A unit of data storage equal to 1,000,000 bytes.
MMX: Refers to microprocessors with additional instructions beyond the
x86 standard. The instructions were developed on the basis of
multimedia code requirements and thus improve the performance
of multimedia applications.
mode: A method of operation, for example, the boot mode or the resume
mode.
modem: Derived from modulator/demodulator, a device that converts
(modulates) digital data for transmission over telephone lines and
then converts modulated data (demodulates) to digital format
where received.
monitor: A device that uses rows and columns of pixels to display
alphanumeric characters or graphic images. See CRT.
motherboard: A name sometimes used to refer to the main printed circuit
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.
MPEG: Moving picture coding expert group is an industry standard
architecture for compression of video signals.
2
non-system disk: A formatted diskette (floppy disk) you can use to store
programs and data but you cannot use to start the computer. See
system disk.
non-volatile memory: Memory, usually read-only (ROM), that is capable
of permanently storing information. Turning the computer’s power
off does not alter data stored in non-volatile memory.
numeric keypad overlay: A feature that allows you to use certain keys on
the keyboard to perform numeric entry, or to control cursor and
page movement.