Introduction:
We live in modern era; technology
makes our life very comfortable and easier. Computer is a great invention of
science and technology. It helps us in various ways. Everyday every moment we
are using it for our daily activities. From home to office it is being used in
a various ways. We can use it for storing data, calculation, graphical
representation, engineering and medical analysis, business analysis,
educational purposes etc. All classes of people use this for their regular
activities. From child to old man use it for different purposes.
