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SECTION 3
Infrared
Light just beyond the red portion of the visible light spectrum which is invisible to humans.
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 address used for computers to communicate in the TCP/IP environment.
Current IPv4 (version 4) uses four values in the range between 1 and 255. (Example:
192.168.100.123).
There are two types of IP address: global address and private address.
The global address is an only address in the world.
A private address is an only address in theclosed network.
IR
An abbreviation for infrared.
IrDA
Infrared Data Association. An organization which produces standards for communication using infrared
as the carrier.
IRQ
Interrupt Request. An acronym for the hardware signal to the CPU that an external event has occurred
which needs to be processed.
KB
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.
LAN
Local Area Network
A connection of computers within a relatively limited area, such as the same floor, or the same
building.
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.
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