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Appendices
Appendices
LifeBook B Series from Fujitsu
95
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.
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.
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.