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DIFFERENCE ENGINE

                                         In 1822,  Charles Babbage, a  mathematician,  invented  the
                                         Difference Engine. It was the first automatic calculator and was
                                         capable of performing mathematical calculations automatically.





            ANALYTICAL ENGINE
            In 1837, Charles Babbage  devised  another  calculator  called

            Analytical  Engine. It  is  the  first-ever working  model  of a
            mechanical computer and a fully program controlled machine.
            This is why Charles Babbage is known as the 'father of computers'.






                 Tick ( ) if you know this.
                 ▶  Abacus was invented by the Chinese people.

                 ▶  John Napier was a Scottish mathematician.





                                                                                                    PURE
                Lady Ada Lovelace is known as the first computer programmer as she created
                the first computer program in 1883.                                                 FACT





                      GENERATION OF COMPUTERS

            After these  early calculating  machines,  the present  computer  took  its  shape  in five
            generations. Let's learn about them.


                                                   FIRST GENERATION

                 Timeline: 1940s
                 Technology: Vacuum tubes
                 Example of Computer: ENIAC, EDVAC,
                 UNIVAC – I, MARK I
                 Features:
                    Very expensive
                     Quite large and generated a lot of heat
                    Very low speed




                                                                                       The Computer Timeline  17
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