COMPUTER

Computer
A computer is a machine that manipulates data according to a list of instructions

The first devices that resemble modern computers data to the mid 20th century (1940-1945) although the computer concept and various machines similar to computer existed earlier.

Early electronic computers were the size of a large room, consuming as much power as several hundred modern personal computers (PC).

Modern computers are based on tiny integrated circuits and are millions o billions of times more capable occupying fraction of the space.