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Industry Standard Architecture (ISA):
An expansion bus design that provides a 16-bit
data path with 16-bit and 8-bit slots. A 16-bit expansion board can use two
adjacent 8-bit slots. See also
EISA
.
infrared port:
A port that allows data to be transferred by infrared signals instead of a
cable. It works on the same principle as a remote control for a television set.
input:
Information received by a computer from a storage device such as a disk, or an
input device such as the keyboard.
input/output (I/O):
Input and output are two of the three functions that computers perform
(the other is processing). Input/Output describes the interrelated tasks of
providing information to the computer and providing the results of processing
to users. I/O devices include keyboards (input) and printers (output). A disk
drive is both an input and an output device, since it can both provide
information to the computer and receive information from the computer.
instruction:
A statement in a computer program that performs a particular function or
task.
Integrated Services Digital Network (ISDN):
A world-wide communications network for
delivering telephone and data services. It uses two types of communications
channel: a B channel which carries voice, graphics and data at 64 Kbps, and a
D channel which carries control information for signalling at 16 Kbps. A basic
ISDN installation typically provides two B channels and one D channel.
Intelligent Input/Output (I
2
O):
A standard for offloading input and output to an auxiliary
processor. The auxiliary processor (I/O processor) manages the data transfer
while the CPU does something else.
interface:
A connection between two parts of a system that lets them work together.
There are different types of interface: 1) Elements such as the graphics
design, prompts and menus of a program allow you to interact with the
program. These elements make up the user interface. 2) A physical connection
between one system or device and another so that information can be
exchanged.
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