99
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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.
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. One thousand bytes.
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.
MB
Megabyte. One million bytes.
Megahertz
1,000,000 cycles per second.
