History of computer

History of computer:

                                       The evolution  of computer has passed through a number of stages.The history of computer implies the gradual change  in the concept of calculation over a long period of time. The history of computing machine from their early forms to the most modern high speed electronic computer  as follow:

               1.ABACUS 3000 BC

        2.Napier Bone    

              3.Slide rule

             4.Pascal calculater(1642)

             5.leibnizs calculator

              6.Babbages analytic engine and differential engine

              7.Lady Augusta ada Lovelace

              8.Goorge Boole:It was developed algebra known as boolen algebra and apply to simplify telephone  circuit.It  consider two value binary notation(0,1)represents any form of data.it was helpful to analyse or desine binary system.