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Glossary 11
memory
Electronic storage area in a computer that retains information and programs. A
computer has two types of memory: read-only memory (ROM) and random access
memory (RAM).
microprocessor
A semiconductor central processing unit that is the principal component of a
microcomputer. Usually contained on a single chip that includes an arithmetic logic
unit, control logic, and control-memory unit.
MIDI
Musical Instrument Digital Interface. An interface for connecting suitably equipped
musical instruments to suitably equipped computers.
MIF
Management Information File. A file stored on a PC that holds system data such as
a model ID and serial number that can be manipulated over a network from a
centralized location.
MMX
A processor architecture that enhances multimedia and communications. This
technology processes multiple data elements in parallel, speeding up such things as
image processing, motion video, speech synthesis, telephony, and 3-D graphics.
modem
MOdulator-DEModulator. A device that links computers over a telephone line.
MPC
Multimedia Personal Computer, a software and hardware standard developed by a
consortium of computer firms led by Microsoft. There are three MPC standards,
called MPC, MPC2, and MPC3, respectively. Each specifies a minimum hardware
configuration for running multimedia software.
MPEG
Motion Pictures Expert Group. Audio/Video technology that allows for better than
VHS quality video and almost CD quality audio by using advanced compression
techniques. MPEG files allow for more realistic motion with a smaller file size than
earlier formats, making it a popular format for digital full-length movies. Files in
the MPEG format have an .MPG extension.
N
nonvolatile memory
Storage media that retains its data when system power is turned off. Nonvolatile
memory is a complementary metal oxide semiconductor (CMOS) chip that is
backed up by an internal battery. The backup battery preserves the clock/calendar
data and system configuration parameters stored in CMOS. See volatile memory.
O
operating system
Set of programs that manage the overall operation of the computer.