RTS: Request to send. An
S
SD: Send data. An
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 (COM1 or COM2) to which you can connect devices, such as a modem, mouse, or serial printer.
SIMM: Single
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 systemÕs 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.
supertwist nematic (STN) display: A
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
T
