80
LifeBook A Series – Section Eight
ROM
Read Only Memory. A form of memory in which infor-
mation is stored by physically altering the material. Data
stored in this way can not be changed by your LifeBook
notebook and does not require power to maintain it.
SDRAM
Synchronous Dynamic Random Access Memory.
Serial Port
A connection to another device through which data is
transferred one bit at a time on a single wire with any
other wires only for control of the device not for transfer
of data.
Shadow RAM
A technique of copying data or applications stored in
ROM (Read Only Memory) into RAM (Random Access
Memory) for access during actual operation. RAM is
much faster to access than ROM, however ROM
contents are not lost when power is removed.
Shadowing allows permanently stored information
to be rapidly accessed.
SRAM
Static random access memory. A specific technology
of making RAM which does not require periodic
data refreshing.
Status Indicator
A display which reports the condition of some portion
of your hardware. On your LifeBook notebook this is an
LCD screen just above the keyboard.
Stereo (audio)
A system using two channels to process sound from two
different sources.
Stroke (keyboard)
The amount of travel of a key when it is pressed from
resting to fully depressed.
Suspend
To make inoperative for a period of time. Your LifeBook
notebook uses various suspension states to reduce power
consumption and prolong the charge of your battery.
SVGA
Super VGA.
S-Video
Super Video. A component video system for driving a
TV or computer monitor.
System Clock
An oscillator of fixed precise frequency which synchro-
nizes the operation of the system and is counted to
provide time of day and date.
TFT
Thin Film Transistor – A technology for flat display
panels which uses a thin film matrix of transistors to
control each pixel of the display screen individually.
UL
Underwriters Laboratories – An independent organiza-
tion that tests and certifies the electrical safety of devices.
USB
Universal Serial Bus. The USB specification is a periph-
eral bus standard for connecting external devices. Some
features of the standard include support for up to 127
concurrent USB devices, dynamic insertion and removal
of devices, and self-identifying peripheral configuration.
VGA
Video Graphics Array. A video display standard
originally introduced by IBM with the PS/2 series of
personal computers.
VRAM
Video Random Access Memory. A memory dedicated to
video display data and control.
WFM
Wired for Management is Intel’s broad-based initiative
to reduce the total cost of ownership (TCO) of business
computing without sacrificing power and flexibility.
Wi-Fi
Wireless Fidelity
Term given to the IEEE 802.11b standard for wireless
interoperability. Wi-Fi- enabled devices link together
wirelessly to form local area networks.
Write Protect
Prevent alteration of the binary state of all bits in a
storage media. Example: all information on a device
such as a floppy diskette; a block of space in a storage
media such as a partition of a hard drive; a file or direc-
tory of floppy diskette or hard drive.
XGA
Extended VGA.
B5FH-5121-01EN-00.book Page 80 Wednesday, April 10, 2002 11:02 AM
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