Toshiba Portégé M100 User Manual page 265

S
SCSI: Small Computer System Inter-
face is an industry standard interface
for connection of a variety of periph-
eral devices.
serial: The handling of data bits one
after the other.
serial communications: A communi-
cations technique that uses as few as
two interconnecting wires to send bits
one after another.
serial interface: Refers to a type of
information exchange that transmits
information sequentially, one bit at a
time. Contrast: Parallel interface.
SIO: Serial Input/Output. The
electronic methodology used in serial
data transmission.
soft key: Key combinations that
emulate keys on the IBM keyboard,
change some configuration options,
stop program execution, and access
the numeric keypad overlay.
software: The set of programs,
procedures and related documentation
associated with a computer system.
Specifically refers to computer pro-
grams that direct and control the
computer system's activities. See also
hardware.
stop bit: One or more bits of a byte
that follow the transmitted character or
group codes in asynchronous serial
communications.
subpixel: Three elements, one red,
one green and blue (RGB), that make
up a pixel on the color LCD. The
computer sets subpixels indepen-
dently, each may emit a different
degree of brightness. See also pixel.
synchronous: Having a constant time
interval between successive bits,
characters or events.
system disk: A disk that has been
formatted with an operating system.
For MS-DOS the operating system is
contained in two hidden files and the
COMMAND.COM file. You can boot
a computer using a system disk. Also
called an operating system disk.
T
terminal: A typewriter-like keyboard
and CRT display screen connected to
the computer for data input/output.
TFT: A color LCD technology that
applies individual transistors to each
pixel enabling fine display control and
excellent screen legibility.
TTL: Transistor-transistor logic. A
logic circuit design that uses switch-
ing transistors for gates and storage.
TTL
Glossary-13