LEIBNIZ CALCULATOR:

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        Leibniz Calculator:

                                       Von Leibniz was a German scientist. He invented a calculating machine in 1694. It was the first calculator that could add, subtract , multiply and divide. It was more reliable and accurate than Pascal's calculator.

              

   


                                                                        Von Leibniz

 

      Jacquard's Loom:

                                 Jacquard's Marie form France invented a machine Jacquard's Loom in 1801. The machine could read punched cards to design a pattern automatically. It was used in textile manufacturing . The invention of this machine helped in making programmable machine like computer.

                                                              Jacquard's Loom


       Babbage's Different and Analytical Engines

                                                                                                Charles Babbage was an English mathematician. He designed an automatic mechanical calculating machine in 1822 know as different Engine. The machine worked by steam power and was fully automatic. The machine could calculate the table of machine.

      Charles Babbage also designed an automatic machine in 1834 known as analytical engine. It worked on the same principle that is used in modern computer. It was more intelligent machine and was fully controlled by computer programs. 


                                                                  Charles Babbage


       Hollerith Desk:

                                An American statistician Herman Hollerith developed a tabulating machine in 1890 known as Hollerith Desks. It was used American census. It had a reader that the holes in the punched cards.

        Hollerith started a company known as Tabulating Machine Company. The company change is name to International Business Machine (IBM) later.


                                                            Harman Hollerith and Tabulator



                                                 MARK I


                                                                   coming soon........

                                 

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