IBM PC 300GL Types 6275, Информационное руководство

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microprocessor . An integrated circuit that contains
the central processing unit (CPU) of a computer.
See processor and central processing unit.
MIDI . Musical instrument digital interface
millimeter (mm)
. One thousandth of a meter.
millisecond (ms) . One thousandth of a second.
milliwatt (mw) . One thousandth of a watt.
modem (modulator/demodulator) . (1) A functional
unit that modulates and demodulates signals. One
of the functions of a modem is to enable digital data
to be transmitted over analog transmission facilities.
(2) A device that converts digital data from a
computer to an analog signal that can be transmitted
on a telecommunication line, and converts the
analog signal received to data for the computer.
multiplexer . A device capable of transmitting
several messages or signals simultaneously on the
same circuit or channel.
multitasking . A mode of operation that provides
for concurrent performance, or interleaved
execution, of two or more tasks.
N
nanosecond (ns) . One thousandth of one millionth
(10
−
9 ) of a second.
network
. (1) An arrangement of nodes and
connecting branches. (2) A configuration of data
processing devices and software connected for
information interchange.
network administrator . The person responsible for
the installation, management, and control of a
network. The network administrator gives
authorization to users for accessing shared
resources, and determines the type of access those
users can have.
network server . See server.
nonvolatile . (1) Pertaining to a storage device
whose contents are not lost when power is cut off.
(2) Contrast with volatile.
ns . nanosecond.
O
operating system . Software that controls the
execution of programs and that may provide
services such as resource allocation, scheduling,
input/output control, and data management.
P
parallel . Pertaining to a process in which all events
occur within the same interval of time, each handled
by a separate but similar functional unit.
parallel port
. An access point through which a
computer transmits or receives data that consists of
several bits sent simultaneously on separate wires.
Contrast with serial port.
parity bit . A check bit appended to an array of
binary digits to make the sum of all the binary
digits, including the check bit, always odd or always
even.
password . A string of characters known to the
computer system and to a user, who must specify it
to gain full or limited access to a system and to the
data stored within it.
PC Card . A credit-card-sized adapter used to add
memory, storage, or I/O capabilities to a personal
computer, personal communicator, or other
electronic device.
PCI . Peripheral component interconnect.
pel . (1) Picture element. (2) In computer graphics,
the smallest element of a monitor surface that can be
independently assigned color and intensity.
peripheral device . Any device that can
communicate with a particular computer; for
example, input/output units, auxiliary storage.
physical . (1) Pertaining to actual implementation
or location as opposed to conceptual content or
meaning. (2) Contrast with logical.
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