A computer is an electronic device that processes data and performs task according to the set of instructions. It consists of software and hardware. The computers of today are very advanced. However, they were not always this advanced. One of the earliest computing devices was the analytical engine made by Charles Babbage in the 1830. But his design was never completed during his life time, it late laid ground work for mechanical computing. Then later in the mid 20 century, computers that we see today were invented. Computers have become an important part of our lives from calculation to searching; we do everything with the help of computers. Surely the invention of computers is one of the greatest technological advancement.

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