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Overview
of computer architecture and origination.
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Computer origination- it concern with the hardware component
operate and the way they are connected together to form the computer system.
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Computer architecture – it concern with the major structure and
behaviour of the computer as seen by user. It includes the information format
instruction set and technique for address memory.
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Basic function of computer- all the computer performs the following
basic function.
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Inputting- saving data and instruction into the computer system
is called inputting.
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Storing-saving data instruction make than reading available
for initial or additional process as and when required.
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Processing – performing arithmetical information.
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Outputting – the process of producing useful information or result
for the user such as a printed report on visual display.
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Controlling- directly the member and sequence in which all the
above operation and perform.
Ø Input
unit- data and
instruction must enter the computer system before any computer can be performing.
The task is performed by the input unit for ex: - data are entered from a
keyboard in a manner similar to typing ex: - keyboard, mouse, joystick, and
scanner.
Ø Central
processing unit- lateral processing unit mind heart combined with the
central nerves system of a computer . so the computer perform function of human
body . it process the data and storage.
Ø Output
unit- the job of an output unit the just reverse of that
option input unit it supply the information obtain from the data processing to
that outside of computer system . it convert the information to acceptable form
.
Ex – monitor, printer,flopydisk.
Figure- storage unit.
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