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Abacus—First Calculating Device



                 The first step towards computing was the invention of Abacus around 3000 years

                 ago, in China. It is a wooden frame with beads on parallel wires which can do
                 simple calculations like addition and subtraction. This device is used to calculate

                 numbers at a fast speed.































                                                               Abacus






                               Brainy Fact


                    Abacus is also used in schools as an aid in teaching the number system.






                            Charles Babbage’s Analytical Engine



                 In 1822, Charles Babbage, a mathematician, developed a steam-driven calculating
                 machine, which was the size of a room, which he called the Difference Engine. But

                 even after working on this project for 10 years, this machine never became a reality.









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