Toshiba SATELLITE U500 User Manual download pdf (Page 180)

Glossary-10 User’s Manual

Satellite U500/U500D, Satellite Pro U500/U500D

numeric keypad overlay: A feature that allows you to use certain keys on

the keyboard to perform numeric entry, or to control cursor and page

movement.

OCR: Optical Character Recognition (reader). A technique or device that

uses laser or visible light to identify characters and input them into a

storage device.

online 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 interpreting

programs, creating data files, and controlling the transmission and

receipt (input/output) of data to and from memory and peripheral

device.

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.

parallel: Processes that occur simultaneously. In communications, it

means the transmission of more than one bit of information at a

time. On your computer, the parallel port provides a parallel

communications interface between the computer and an

appropriate device. Compare serial.

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.

The computer provides various levels of password protection such

as user and supervisor.

PC card: A credit-card-sized expansion card designed to increase the

capabilities of notebook computers. PC Cards provide functions

such as modem, fax/modem, hard disk drive, network adapter,

sound card, or SCSI adapter.

PCI: Peripheral Component Interconnect. An industry standard 32-bit bus.

peripheral: Any device, such as a printer or joystick, that is attached to the

computer and controlled by the computer’s CPU.

pixel: A picture element. The smallest dot that can be made on a display or

printer. Also called a pel.

plug and play: A capability with Windows that enables the system to

automatically recognize connections of external devices and make

the necessary configurations in the computer.

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