The method of setting up groups of sectors on a hard-disk drive to store system start-up information, sector status information, and directory
information.
loopback device
A piece of hardware used for testing a serial port or parallel port. The loopback device contains a port connector and sometimes a looped cable.
The connector attaches to the port on the computer and is used during testing to send a signal out through the port and immediately have it
returned through the port.
LPTn
The device names for the first through third parallel ports on your computer are LPT1, LPT2, and LPT3.
LVDS
Acronym for low-voltage differential signaling.
M
m
Abbreviation for meter(s).
mA
Abbreviation for milliampere(s).
math coprocessor
A chip that relieves the computer's microprocessor of numeric-processing tasks. The Intel
®
Pentium
®
III microprocessor, for example, includes a
built-in math coprocessor.
Mb
Abbreviation for megabit(s), 1,048,576 bits.
MB
Abbreviation for megabyte(s). The term megabyte means 1,048,576 bytes; however, when referring to hard-disk drive storage, the term is often
rounded to mean 1,000,000 bytes.
MB/sec
Abbreviation for megabytes per second.
Mbps
Abbreviation for megabits per second.
memory
A computer can contain several different forms of memory, such as RAM, ROM, and video memory. Frequently, the word memory is used as a
synonym for RAM; for example, an unqualified statement such as "...a computer with 64 MB of memory" refers to a computer with 64 MB of RAM.
memory address
A specific location, usually expressed as a hexadecimal number, in the computer's RAM.
memory manager
A utility that controls the implementation of memory in addition to conventional memory such as extended memory.
memory module
A small circuit board containing SDRAM chips that connects to the system board.
MHz
Abbreviation for megahertz.
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