Glossary 295

M

memory — Typically refers to the computer’s main memory, where

 

 

programs are run and data is temporarily stored and processed.

 

Memory can be volatile and hold data temporarily, such as RAM, or

 

it can be nonvolatile and hold data permanently, such as ROM. A

 

computer’s main memory is RAM. See RAM, ROM.

 

microprocessor — See central processing unit (CPU).

 

MIDI (Musical Instrument Digital Interface) — A standard for

 

connecting musical instruments, synthesizers, and computers. The

 

MIDI standard provides a way of translating music into a form

 

computers can use, and vice versa.

 

modem — Short for “modulator/demodulator.” A device that converts

 

information from digital to analog and back to digital, enabling

 

information to pass back and forth between digital computers and

 

analog telephone lines.

 

motherboard — The main circuit board in the computer. It contains the

 

processor, memory, and other primary components.

 

MS-DOS prompt — See system prompt.

 

multi-function drive — A DVD drive that can read and write to CD and

 

DVD media.

 

multimedia — A combination of two or more media, such as sound,

 

animation, and video in a computer program or presentation.

 

Musical Instrument Digital Interface — See MIDI.

N

network — A collection of computers and associated devices that are

connected by communications facilities. A network allows you to

 

 

share data and peripheral devices, such as printers, with other users

 

and to exchange electronic mail.

 

non-interlaced— A method of refreshing a computer screen, in which

 

each pixel of every line is refreshed as the electron beam scans

 

across and down the screen. Compare interlaced.

 

non-system disk — A disk for storing programs and data that cannot be

 

used to start the computer. Compare system disk.