The computer's was developed as results of man's search for a faster way to calculate.Computers are very fast because data and instrutions are represented as pulses within electronic circuits and they travel at the speed of light.A da's work on the computer would take aperson more than 2700 years with a hand calculator.People who contributed to make this possible where philosophers,inventors,mathematicans,programmers,etc.It has come to this stage because of their tireless effort. Counting machines didnot exits many years ago.People used to count using their fingers or arranged stones in piles or rows.They drew lines on the ground,cut notches in sticks or tied knots in strings in order to keep traks of the number of things.As the need to calculate increased,people sought tools to help them . Around the fifth century A.D.,Hindu pilosophers developed a new method of counting from 0-9.This system of counting is called the desimal method.The numbers stated above(0 to 9) are the digits.Digits is a finger or toe,and counting on one's fingers is called the digital operation.The term digital has been extended to cover any operation on distinct values which are carried out in steps.eg,"Switch the light on" is a digital operation,whereas ,operating a radio's volume control is anolog operation.The vast major of computers seen today are electronic digital computers and their names suggest that they carry out their work by performing high speed digital operation on data.The first electronic digital ccomputer were built in the mid 1940s.Their forerunners were a number of digital devices,of which the abacus is one.All these began with counting of pebbles,which of course,was the earliest method.
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