Toshiba Satellite M40 (PSM40) - Manual (Page 196)

User’s Manual Glossary-12
Glossary
RGB: Red, green, and blue. A device that uses three input signals, each
activating an electron gun for a primary additive colour (red, green,
and blue) or port for using such a device. See also CRT.
RJ11: A modular telephone jack.
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.
RS-232C: The Electronic Industries Association (EIA) interface standard
that describes the 25-pin connector interface and control, data, and
status signals that allow asynchronous communications between
computers, printers, communications and other peripheral devices.
S
SCSI: Small Computer System Interface is an industry standard interface
for connection of a variety of peripheral devices.
serial: The handling of data bits one after the other.
serial communications: A communications 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.
serial port: A communications port to which you can connect devices,
such as a modem, mouse, or serial printer.
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 colour LCD. The computer sets subpixels
independently, each may emit a different degree of brightness. See
also pixel.
S-video: This connection provides separate lines for contrast and colour,
which produces a video image superior to that produced by a
composite connection. See also RCA jack.
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.