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  2. Pascaline - Wikipedia

    en.wikipedia.org/wiki/Pascal's_calculator

    By that time Pascal had moved on to the study of religion and philosophy, which resulted in both the Lettres provinciales and the Pensées. The tercentenary celebration of Pascal's invention of the mechanical calculator occurred during World War II when France was occupied by Germany and therefore the main celebration was held in London ...

  3. Mechanical calculator - Wikipedia

    en.wikipedia.org/wiki/Mechanical_calculator

    The machine was a bridge in between Pascal's calculator and a calculating clock. The carry transmissions were performed simultaneously, like in a calculating clock, and therefore "the machine must have jammed beyond a few simultaneous carry transmissions".

  4. History of computing hardware - Wikipedia

    en.wikipedia.org/wiki/History_of_computing_hardware

    View through the back of Pascal's calculator. Pascal invented his machine in 1642. In 1642, while still a teenager, Blaise Pascal started some pioneering work on calculating machines and after three years of effort and 50 prototypes [18] he invented a mechanical calculator. [19] [20] He built twenty of these machines (called Pascal's calculator ...

  5. File:Pascaline calculator.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Pascaline_calculator.jpg

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  6. File:Gears used in Pascal's calculator.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Gears_used_in_Pascal's...

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  7. Adding machine - Wikipedia

    en.wikipedia.org/wiki/Adding_machine

    Blaise Pascal and Wilhelm Schickard were the two original inventors of the mechanical calculator in 1642. [1] For Pascal, this was an adding machine that could perform additions and subtractions directly and multiplication and divisions by repetitions, while Schickard's machine, invented several decades earlier, was less functionally efficient ...

  8. Slide rule - Wikipedia

    en.wikipedia.org/wiki/Slide_rule

    In the 1920s, the novelist and engineer Nevil Shute Norway (he called his autobiography Slide Rule) was Chief Calculator on the design of the British R100 airship for Vickers Ltd. from 1924. The stress calculations for each transverse frame required computations by a pair of calculators (people) using Fuller's cylindrical slide rules for two or ...

  9. The Calculating Machines - Wikipedia

    en.wikipedia.org/wiki/The_Calculating_Machines

    At the time Martin wrote the book, "mechanical calculating machines were a symbol of high-tech sophistication in the workplace"; reviewer Jonathan Samuel Golan suggests that it was aimed at collectors rather than historians, [5] while the editors of the Bulletin of Science, Technology & Society suggest that instead its purpose was to inform the public. [4]