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Glossary
Terms
245
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.
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.
O
online — Available through the computer. Online may refer to
information being read from your own computer’s hard disk, such as
online documentation or online help, or to information coming from
another company on a company network or the Internet.
operating system — A set of programs that controls how the computer
works. Examples of operating systems are Windows 98 Second
Edition and Windows 2000.
P
palette — See color palette.
parallel — Processes that occur simultaneously. In communications, it
means the transmission of more than one bit of information at a time.
On your computer, the parallel port provides a parallel
communications interface between the computer and an appropriate
device. Most modern printers are parallel. Compare serial.
password — A unique string of characters entered by a user to verify his
or her identity to the computer or the network.