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ESD
Electro-Static Discharge. The sudden discharge
of electricity from a static charge which has
built-up slowly. Example: the shock you get
from a doorknob on a dry day or the sparks
you get from brushing hair on a dry day.
Extended Memory
All memory more than the 640KB recognized
by MS-DOS as system memory.
FCC
Federal Communication Commission.
Floppy Disk
A spinning platter of magnetic data storage
media which is highly flexible.
GB
Gigabyte.
Hard drive
A spinning platter of magnetic data storage
media where the platter is very stiff.
A p p e n d i c e s
Hexadecimal
A decimal notation for the value of a 4 bit
binary number. (0-9, A, B, C, D, E, F) Example:
2F in hexadecimal = 00101111 in binary = 47
in decimal.
I/O
Input/Output. Data entering and leaving your
computer in electronic form.
I/O Port
The connector and associated control circuits
for data entering and leaving your computer
in electronic form.
IDE
Intelligent Drive Electronics. A type of control
interface for a hard drive which is inside the
hard drive unit.
Infrared
Light just beyond the red portion of the visible
light spectrum which is invisible to humans.
L i f e B o o k B S e r i e s f r o m F u j i t s u
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 hard-
ware 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.
LCD
Liquid Crystal Display. A type of display which
makes images by controlling the orientation of
crystals in a crystalline liquid.
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