Operating instructions

mega- A prefix that usually stands for the binary quantity 1,048,576 (2
20
).
One megabyte is 1,048,576 bytes. One megahertz, however, is a million hertz.
Sometimes shortened to meg, as in “a 286 has an address space of 16 megs.”
memory A device or medium for temporary storage of programs and data
during program execution. The term is synonymous with storage, although it is
most frequently used for referring to the internal storage of a computer that can
be directly addressed by operating instructions. A computer’s temporary stor
-
age capacity is measured in kilobytes (KB) or megabytes (MB) of RAM (ran
-
dom-access memory). Long-term data storage on disks is also measured in
kilobytes, megabytes, gigabytes, and terabytes.
Memory Stick Sony’s flash memory card format; rarely seen outside of Sony
devices.
MFT (master file table) An enhanced file allocation table used by NTFS. See
also FAT (file allocation table).
MHz (megahertz) A unit of measure that equals a frequency of one million
cycles per second.
micro DIMM A type of memory used in portable PCs because of its small size.
microATX A variation of the ATX form factor. MicroATX motherboards are
generally smaller than their ATX counterparts, but retain all the same func-
tionality.
microcomputer A computer system in which the central processing unit is
built as a single, tiny semiconductor chip or as a small number of chips.
microprocessor Also called CPU. The “brain” of a computer. The primary
computer chip that determines the relative speed and capabilities of the
computer.
MIDI (musical instrument digital interface) MIDI is a standard that de
-
scribes the interface between a computer and a device for simulating musical in
-
struments. Rather than sending large sound samples, a computer can simply
send “instructions” to the instrument describing pitch, tone, and duration of a
sound. MIDI files are therefore very efficient. Because a MIDI file is made up of
42 MIKE MEYERS’ A+ CERTIFICATION PASSPORT
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