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Appendices
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ROM
Read Only Memory. A form of memory in
which information is stored by physically alter-
ing the material. Data stored in this way can not
be changed by your Computer 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 tech-
nology 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 Computer
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
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
synchronizes 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.
TUV
TUVRheinland of North America, Inc. – An
independent organization that tests and certifies
the electrical safety of devices.