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Computer Timeline

By marii_possobon
  • 500 BCE

    First "Computer": Abacus

    First "Computer": Abacus
    The term "to compute" means "to calculate". Therefore, the first computer invented was the Abacus, a kind of calculator.

  • Slide Rule

    Slide Rule
    The Abacus was perfected and John Napier invented a Slide Rule to make easier to calculate big multiplication operations.

  • First Mechanical Automatic Calculator: Pascal's Machine

    First Mechanical Automatic Calculator: Pascal's Machine
    The mathematical Pascal creates the first mechanical automatic calculator.

  • First Pocket Calculator: Leibniz's Calculator

    First Pocket Calculator: Leibniz's Calculator
    The first calculator able to calculate subtraction, addition, multiplication and division operation was created by Leibniz.

  • First Programmable Mechanical Machine

    First Programmable Mechanical Machine
    Joseph Marie Jacquard invented the first programmable mechanical machine to help him to cut out fabrics automatically, since he was a tailor.

  • The Diference Machine

    The Diference Machine
    Charles Babbage invented the Difference Machine which was able to calculate different types of mathematical operations.

  • The Analytical Machine

    The Analytical Machine
    Charles Babbage continued his projects and invented the Analytical Machine, that is compared to the nowadays computers.

  • Father of Mathematical Logic

    Father of Mathematical Logic
    George Boole is considere the father of mathematical logic because of his studies in this subject. His logic system is used in the computers nowadays.

  • Hollerith's Machine

    Hollerith's Machine
    Hermann Hollerith created a machine that was able to speed up the process of data computing.
  • Period: to

    Pre Modern Computers

  • Vannevar Bush

    Vannevar Bush
    He invented a computer with binary architeture, using Boole's theory.

  • Second World War

    Second World War
    The Second World War caused the development of computers. The most highlighted were Mark I, by the Harvard University, and Colossus, by Allan Turing,

  • First Generation

    First Generation
    1946-1949: First Generation
    The computers at this time used eletronics valves and were huge. One example is the ENIAC (Eletronic Numerical Integrator and Computer).
  • Period: to

    Modern Computers

  • Second Generation

    Second Generation
    1959-1964: Second Generation
    The eletronic valves were replaced by transistors. That fact reduced the size of the computers.

  • Third Generation

    Third Generation
    1964-1975: Third Generation
    The computers from this generation worked with integrated circuits, which replaced the transistors. This enabled an even smaller size for the computer.
    At tis time, the use of personal computers started.

  • Fourth Generation

    Fourth Generation
    1975-...: Fourth Generation
    This time is known because of the drastic size reduction, with the use of microprocessers, and the drastic price drop, that furthered the population to buy it.

  • Today

    Today
    The computers have each year beem more technological. The researchs for its improvements is steadfast.