Computers have been around a lot longer than many people might imagine. The word

Computers have been around a lot longer than many people might imagine. The word “computer” has changed meaning over decades, but the electronic computer that we think of in modern times developed throughout the second half of the 20th century.•Evolution of computers refers to historical developments through which the computers and technology have passed, from the time they started to exist in ancient forms to their current state.•Knowledge about the history evolution of computers gives us a deeper understanding of the origin and the gradual Mechanical to Electro-mechanical to Electronic technological changes, that have brought about the kind of computers we see today, and help us to provide how they will be in future.•Computers have evolved over past 50-60 years through idea of computing machines has been much older. In earlier time computers were only used by scientist and engineers for complex calculations.