History of Computer
 There were various computing devices used before the computer
was created but, the abacus was one of the more often used
calculation devices. The first mechanical computer, created by
Charles Babbage in 1822. Charles Babbage, an English polymath, is
often thought of as “the man who invented computers”. The idea
of an electronic computer was first conceived by the English
mathematician Charles Babbage, but it took until 1991 for a data
processor to be physically constructed.