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Introduction to ICT the computer (view source)
Revision as of 06:04, 3 June 2014
, 06:04, 3 June 2014→Introduction to ICTs and computers
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'''What does a computer do ?'''
[[Image:Introduction-Part3_html_1f9b3b92.png]]<br>
[[Image:Introduction-Part3_html_1f9b3b92.png]]<br>
In this chapter you will
learn about computers, a new ICT tool. A computer is a device which
takes input, processes it and gives output which can be stored and
shared. When you enter data into your computer, it is called
as input. An input can be data like text or picture or an instruction
(what
to do with the data). This data is processed (process
means to perform a series of operations on a set of data) and you
will get the output. Data or information that the computer generates
is called the output.
Suppose
you want to add two numbers, 2 and 5. Any
input has two parts, data and the instruction '2 + 5' is the input.
The numbers 2 and 5 are called the 'data' and
the '+' is called the instruction. A CPU (or a software to add the
numbers) will do the addition, it is called the process. The answer
'7' is the output or the result from the input and the process.
A
computer lets you to do many tasks like writing a letter, watching a
educational film, playing games, listening to music and more. You can
also look for information on the Internet.
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