Toshiba Pro A300D Manual Do Utilizador

Página de 218
User’s Manual
Glossary-12
Glossary
ROM: Read Only Memory: A nonvolatile memory chip manufactured to 
contain information that controls the computer’s basic operation. 
You cannot access or change information stored in ROM.
S
S-Video: Short for Super-Video, a type of connection used by S-VHS 
videocassette players, camcorders, DVD players, etc. to transmit 
high-quality video signals.
SCSI: Small Computer System Interface is an industry standard interface 
for connection of a variety of peripheral devices.
SD Card: Secure Digital cards are flash memory widely used in a variety of 
digital devices such as digital cameras and Personal Digital 
Assistants.
SECAM L: SECAM (Sequential Color Memory) is a broadcasting standard 
used in France.
serial communications: A communications technique that uses as few as 
two interconnecting wires to send bits one after another.
serial interface: Refer to a type of information exchange that transmits 
information sequentially, one bit at a time.
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 
programs 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 
independently, 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.