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N
non-system disk: A formatted diskette (floppy disk) you can use to store
non-volatile memory: Memory, usually read-only (ROM), that is capable
numeric keypad overlay: A feature that allows you to use certain keys on
O
OCR: Optical Character Recognition (reader). A technique or device that
on-line state: A functional state of a peripheral device when it is ready to
operating system: A group of programs that controls the basic operation of a
output: The results of a computer operation. Output commonly indicates data
P
parallel interface: Refers to a type of information exchange that transmits
parallel: Refers to two or more processes or events that can occur
parity: 1) The symmetrical relationship between two parameter values
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.
Glossary 10
programs and data but you cannot use to start the computer. See
system disk.
of permanently storing information. Turning the computer's power
off does not alter data stored in non-volatile memory.
the keyboard to perform numeric entry, or to control cursor and
page movement.
uses laser or visible light to identify characters and input them into
a storage device.
receive or transmit data.
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.
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.
information one byte (8 bits) at a time. See also serial interface.
simultaneously, and without interfering with each other. See also serial.
(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.
The computer provides various levels of password protection such
as user, supervisor and eject.
Equal in size to a pixel or group of pixels. See pixel.
User's Manual
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