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printed symbols into a computer. See also OCR.
on-line state: A functional state of a peripheral device when it is ready to
receive or transmit data.
operating system: a group of programs that controls the basic operation of a
computer. Operating system functions include the interpreting programs,
creating data files, and controlling the transmission and receipt (input/output)
of data to and from memory and peripheral devices. Toshiba portable computers
use the MS-DOS operating system.
operating system disk: The disk(s) containing the operating system. See system
disk.
output: The results of a computer operation. Output commonly indicates data
1) printed on paper, 2) displayed at a terminal, 3) sent through the serial
port of internal modem, or 4) stored on some magnetic media.
P
parallel: Refers to two or more processes or events that can occur
simultaneously, and without interfering with each other. See also serial.
parallel interface: Refers to a type of information exchange that transmits
information one byte (8 bits) at a time. See also serial interface.
parity: 1) The symmetrical relationship between two parameter values (integers)
both of which are either on or off; odd or even; 0 or 1. 2) In serial
communications, an error detection bit that is added to a group of data bits
making the sum of the bits even or odd. Parity can be set to none, odd, or even.
password: A unique string of characters used to identify a specific user.
pel: The smallest area of the display that can be addressed by software. Equal
in size to a pixel or group of pixels. See pixel.
peripheral device: An I/O device that is external to the central processor
and/or main memory such as a printer or a mouse.
pixel: A picture element. The smallest dot that can be made on a display or
printer. Also called a pel.
pop-up window: A window you can display at any time to change most configuration
options and monitor the charge of the battery.
port: The electrical connection through which the computer sends and receives
data to and from devices or other computers.
printed circuit board (PCB): A hardware component of a processor to which
integrated circuits and other components are attached. The board itself is
typically flat and rectangular, and constructed of fiberglass, to form the
attachment surface.
program: A set of instructions a computer can execute that enables it to