history of technology

By jpark9
  • Period: Oct 18, 995 to

    history timeline

  • Sep 19, 1001

    creation of abacus

    creation of abacus
    abacus is a calculating tool that is used for performing arithmetic processes.
  • creation of napier's rods

    creation of napier's rods
    napier's rods made by john napier, are used for for calculation of products and quotients of numbers that was based on Arab mathematics and lattice multiplication.
  • creation of the pascaline

    creation of the pascaline
    in 1642, while blaise pascal was still a teenager, he started some work on calculating machines and after 3years of effort, he invented the mechanical calculator, pascaline.
  • creation of the leibniz wheel

    creation of the leibniz wheel
    he added automatic multiplication and division to Pascal's calculator and was the first to describe a pinwheel calculator in 1685 and invented the Leibniz wheel.
  • (i don't know the date) creation of the difference machine

    (i don't know the date) creation of the difference machine
    chares babbage invented the first mechanical computer that led to more complex designs. In 1991, a perfectly functioning difference engine was made from Babbage's plan.
  • the 1st generation of computers

    the 1st generation of computers
    the vaccum tubes were used for circuitry and magnetic drums for memory in edvac.
  • the second generation of computers

    the second generation of computers
    the transistors replaced vacuum tubes but didn't get famus until 1950. it was better than the vaccum tubes and allowed computers to become smaller, faster, cheaper, more energy-efficient and more reliable.
  • the third generation of computers

    the third generation of computers
    the transistors were made smaller and placed on semiconductors, which increased the speed and efficiency of computers.
  • the fourth generation of computers

    the fourth generation of computers
    thousands of integrated circuits were built onto a single silicon chip and are being used until now.