Fujitsu LifeBook A6025 User Manual Download

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G l o s s a r y

I/O Port

The connector and associated control circuits for data
entering and leaving your notebook in electronic form.

IDE

Intelligent Drive Electronics. A type of control interface
for a hard drive which is inside the hard drive unit.

Infrastructure

A name of a wireless LAN configuration. This type of
communication uses an access point.

Another type of communication is called AdHoc.

IP Address

An identifier for a computer or device on a TCP/IP
network. Networks using the TCP/IP protocol route
messages based on the IP address of the destination. The
format of an IP address is a 32-bit numeric address
written as four numbers separated by periods. Each
number can be zero to 255. For example, 1.160.10.240
could be an IP address.

Within an isolated network, you can assign IP addresses
at random as long as each one is unique. However,
connecting a private network to the Internet requires
using registered IP addresses (called Internet addresses)
to avoid duplicates.

The four numbers in an IP address are used in different
ways to identify a particular network and a host on that
network. Three regional Internet registries -- ARIN,
RIPE NCC and APNIC -- assign Internet addresses from
the following three classes.

Class A - supports 16 million hosts on each of 126
networks

Class B - supports 65,000 hosts on each of 16,000
networks

Class C - supports 254 hosts on each of 2 million
networks

The number of unassigned Internet addresses is running
out, so a new classless scheme called CIDR is gradually
replacing the system based on classes A, B, and C and is
tied to adoption of IPv6. (credit: webopedia.com)

An abbreviation for infrared.

IRQ

Interrupt Request. An acronym for the hardware signal
to the CPU that an external event has occurred which
needs to be processed.

Kilobyte.

LAN

Local Area Network. An interconnection of computers
and peripherals within a single limited geographic
location which can pass programs and data amongst
themselves.

LCD

Liquid Crystal Display. A type of display which makes
images by controlling the orientation of crystals in a
crystalline liquid.

Lithium ion Battery

A type of rechargeable battery which has a high power-
time life for its size and is not subject to the memory
effect as Nickel Cadmium batteries.

MAC Address

Media Access Control Address

A unique physical address of a network card. For
Ethernet, the first three bytes are used as the vendor
code, controlled and assigned by IEEE. The remaining
three bytes are controlled by each vendor (preventing
overlap), therefore, every Ethernet card is given a unique
physical address in the world, being assigned with a
different address from other cards. For Ethernet, frames
are sent and received based on this address.

Megabyte.

Megahertz

1,000,000 cycles per second.

Memory

A repository for data and applications which is readily
accessible to your LifeBook notebook’s CPU.

MHz

Megahertz.

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.

MTU

Maximum Transmission Unit

The maximum data size that can be transferred at a time
through the Internet or other networks. You can set a
smaller MTU size to obtain successful communication,
if you have difficulty transferring data due to the fact
that the maximum size is too large.

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