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Glossary
MB
Megabyte.
Megahertz
1,000,000 cycles per second.
Memory
A repository for data and applications which is readily
accessible to your LifeBook CPU.
MHz
Megahertz.
MIDI
Musical Instrument Digital Interface. A standard
communication protocol for exchange of information
between computers and sound producers such
as synthesizers.
Modem
A contraction for MOdulator-DEModulator. The
equipment which connects a computer or other data
terminal to a communication line.
Monaural
A system using one channel to process sound
from all sources.
MPU-401
A standard for MIDI interfaces and connectors.
NTSC
National TV Standards Commission. The standard for
TV broadcast and reception for the USA.
Operating System
A group of control programs that convert application
commands, including driver programs, into the exact
form required by a specific brand and model of micro-
processor in order to produce the desired results from
that particular equipment.
PAL
Phase Alternating Line. The standard for TV broadcast
and reception for Europe.
Parallel Port
A connection to another device through which data is
transferred as a block of bits simultaneously with a wire
for each bit in the block and with other wires only for
control of the device not for transfer of data.
Partition
A block of space on a hard drive which is set aside
and made to appear to the operating system as if it
were a separate disk, and addressed by the operating
system accordingly.
PCMCIA
PCMCIA is a trademark of the Personal Computer
Memory Card International Association. The Personal
Computer Memory Card International Association is an
organization that sets standards for add-in cards for
personal computers.
Peripheral Device
A piece of equipment which performs a specific
function associated with but not integral to a computer.
Examples: a printer, a modem, a CD-ROM.
Pitch (keyboard)
The distance between the centers of the letter keys
of a keyboard.
Pixel
The smallest element of a display, a dot of color on your
display screen. The more pixels per area the clearer your
image will appear.
POST
Power On Self Test. A program which is part of the BIOS
which checks the configuration and operating condition
of your hardware whenever power is applied to your
LifeBook. Status and error messages may be displayed
before the operating system is loaded. If the self test
detects failures that are so serious that operation can not
continue, the operating system will not be loaded.
Program
An integrated set of coded commands to your
computers telling your hardware what to do and how
and when to do it.
PS/2
An IBM series of personal computers which established
a number of standards for connecting external devices
such as keyboards and monitors.
RAM
Random Access Memory. A hardware component of
your LifeBook that holds binary information (both
program and data) as long as it has the proper power
applied to it.
RAM Module
A printed circuit card with memory and associated
circuitry which allows the user to add additional
memory to the computer without special tools.
Reset
The act of reloading the operating system. A reset erases
all information stored in RAM.
Restart
See Reset.
Resume
To proceed after interruption. In your LifeBook this
refers to returning to active operation after having been
in one of the suspension states.
ROM
Read Only Memory. A form of memory in which infor-
mation is stored by physically altering the material. Data
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