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Evolution of Computers
Goal Glimpse
History of Computers Computer Generations
Characteristics of a Computer Limitations of a Computer
Dear Students! You learnt about computers in your previous class.
Today, computers are a familiar term for you. But have you ever wondered, ‘Who
invented the computer?’ The creation of the computer is the result of many people’s
efforts. While no single person can be credited with inventing computers, several
notable individuals played key roles in their development.
HISTORY OF COMPUTERS
By now, you have learned about the many uses of computers. You now know that
the computer is an powerful machine that can be utilised for performing a wide
range of activities. A lot of research was conducted in the past to create a strong
machine. In this chapter, you will learn about the scientists who played a key role in
developing the perfect machine that you use every day.
Early Counting Tools
Since ancient times, people have created/discovered tools for doing calculations.
Early humans tied knots in ropes and made marks on clay to keep records. They also
used pebbles, stones, sticks, fingers, toes, and bones for counting.
Evolution of Computers 7

