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Evolution of
Computers 1
Learning Outcomes
History of Computers Computer Generations
Characteristics of a Computer Limitations of a Computer
Dear Students! You have learnt about computers in your previous class.
It is a familiar word for you today. But have you ever thought ‘Who invented the computer?’
This machine is an outcome of labour of a number of minds. No particular person can
be credited with the invention of computers, but several names stand out in the crowd.
i + HISTORY OF COMPUTERS
So far, you have learnt the various uses of the computer. You have also learnt that the
computer is a powerful device and can be used to accomplish a variety of tasks. In the
past, a lot of research was done in order to develop a powerful machine. In this chapter,
you will learn about the scientists who were responsible for creating a perfect device that
you use in your everyday life.
Early Counting Tools
Since ancient times, people have invented tools for calculations. Early man tied knots in a
rope and carved marks on clay to keep the records. They also used to count with the help
of fingers, toes, pebbles, stones, sticks, bones, etc.
Early Counting Tools
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Evolution of Computers

