56. Low order position: The rightmost position in a string
of
characters.
57. Machine Language: (1) A language that is used directly by a
machine. (2) Another term for computer instruction code.
58. Memory Address: A two-byte value selecting one specific
r--...,
memory location on a memory map.
59. Memory Location: The most specific part
of
a memory map
that the computer can refer to.
60. Memory Map: The list
of
memory locations addressed directly
by the microprocessor.
61. MEMR: Memory Read Command. (Refer to System Board
I/O
Channel Descriptions).
62. MEMW: Memory Write Command. (Refer to System Board
I/O
Channel Descriptions).
63.
MFM
Coded: Modified Frequency Modulation.
It
is
double
density encoding
of
information on a diskette.
64. Mhz: Megahertz. A unit
of
frequency equal to one million
Hertz.
,~
65. Microprocessor: A processing unit, or part
of
a processing unit,
that consists
of
microcode.
In
the IBM Personal Computer, the
microprocessor
is
the Intel-8088.
66. Mnemonic: Symbol or symbols used instead
of
terminology
more difficult
to
remember. Usually a mnemonic has two
or
three letters.
67. Mode: (1) A method
of
operation; for example, the binary
mode, the interpretive mode, the alphanumeric mode. (2) The
most frequent value in the statistical sense.
68. Monitor: (1) A device that observes and verifies the operation
of
a data processing system and indicates any specific depart-
ure from the norm. (2) A television type display such as the
IBM Monochrome Display. (3) Software or hardware that
observes, supervises, controls,
or
verifies the operations
of
a
system.
69. Multiplexer: A device capable
of
interleaving the events
of
two
or
more activities
or
capable
of
distributing the events
of
an
interleaved sequence to their respective activities.
G-5
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