Toshiba Satellite 2650 - Manual (Page 202)

12 Glossary User's Manual
Satellite 2610/2650 User's Manual – GLOSSARY.DOC – ENGLISH – Printed on 18/09/99 as GL_261UK
ROM: Read Only Memory: A non-volatile 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 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.
serial: The handling of data bits one after the other.
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.
standby:
See resume.
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.
suspend:
See resume.
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.