Toshiba Portege R500 User Manual - Page 191

operating system, peripheral device

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Glossary N non-system disk: A formatted floppy diskette you can use to store programs and data but you cannot use to start the computer. See system disk. nonvolatile memory: Memory, usually read-only (ROM), that is capable of permanently storing information. Turning the computer's power off does not alter data stored in nonvolatile memory. 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. O 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 devices. output: The results of a computer operation. Output commonly indicates data. 1) printed on paper, 2) displayed at a terminal, or 3) stored on some magnetic media. P 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, supervisor and eject. 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 component interconnect: An industry standard 32-bit bus. 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. User's Manual Glossary-10

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User’s Manual
Glossary-10
Glossary
N
non-system disk:
A formatted floppy diskette you can use to store
programs and data but you cannot use to start the computer.
See
system disk.
nonvolatile memory:
Memory, usually read-only (ROM), that is capable
of permanently storing information. Turning the computer’s power
off does not alter data stored in nonvolatile memory.
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.
O
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
devices.
output:
The results of a computer operation. Output commonly indicates
data.
1) printed on paper, 2) displayed at a terminal, or 3) stored on some
magnetic media.
P
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, supervisor and eject.
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 component interconnect:
An industry standard 32-bit bus.
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.