about computer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

By Chris Lee
  • Jan 1, 1387

    abacus

    abacus
    Info:calculating tool used primarily in parts of Asia for performing arithmetic processes

  • Blaise Pascal

    Blaise Pascal
    year 19 June-19 August 1662
    place:France
    job:mathematics genius
    info:Invented an early calculator called Pascaline.
  • Period: to

    Computer history

    this is computer history

  • Pascaline

    Pascaline
    Name:Pascaline
    Year:1642
    Info: The Pascaline, one of the earliest mechanical devices that performed addition and subtraction. Blaise Pascal invented it. Name:Pascaline
    Year:1642
    Info: The Pascaline, one of the earliest mechanical devices that performed addition and subtraction. Blaise Pascal invented it.

  • Gottfried Wilhelm Leibniz

    Gottfried Wilhelm Leibniz
    Year:july 1,1646-November 14, 1716
    place:german
    job:Mathematician and Philosopher
    Info:Invented calculus and binary Arithmetics. The Step Reckoner was a digital mechanical calculator made by him.

  • Step Reckoner

    Step Reckoner
    Name:Step Reckoner
    Year:1694
    Info: It was the first calculator that could perform all four arithmetic operations: addition, subtraction, multiplication and division. German mathematician Gottfried Wilhelm Leibniz invented it.

  • Charles Babbage

    Charles Babbage
    year=26 12 1791-18 october 1871
    place England
    job=English mathematician
    info grandfather of computer.

  • Augusta Ada lovelace

    Augusta Ada lovelace
    Name:Augusta Ada Lovelace
    Year:10 December 1815-27 November
    1852
    Place:England
    Job: Mathematician
    Info: She known for her work on Charles Babbage’s early mechanical general-purpose computer. She is sometimes as the first computer programmer.

  • Herman Hollerith

    Herman Hollerith
    Year:29 February 1860-17 November
    1929
    Place:America
    Job: Statistician
    Info:He developed the mechanical tabulator and based on punched cards. He was the founder of IBM.( Interational Business Machine Corporation)

  • Tommy Flowers

    Tommy Flowers
    Name:Tommy Flowers
    Year:22 December 1905-28 October-1988
    Place: England
    Job: Engineer
    Info: Flowers designed Colossus, the world’s first programmable electronic computer.

  • Alan Mathison Turing

    Alan Mathison Turing
    Name:Alan Mathison Turing
    Year:23 June 1912-7 June 1954
    Place:UK
    Job: Mathematician, Computer Scientist
    Info: He was highly influential in the development of computer science. He became a student in King’s College, Cambridge.

  • vacuum tube

    vacuum tube
    Info:a vacuum tube, electron tube,
    thermionic valve,tube,or valve is a device container. The container is often thin transparent glass in a roughly cylindrical shape.

  • Steve Wozniak

    Steve Wozniak
    Name:Steve Wozniak
    Year:11 August 1950
    Place:America
    Job:computer programmer
    Info:He worked with Steve Jobs
    in Apple.

  • Transistors

    Transistors
    Info:A transistor is a semiconductor
    device used to amplify and switch electronic signals and electrical power.

  • sir Timothy John "Tim" Berners-Lee

    sir Timothy John "Tim" Berners-Lee
    Place:England
    Job:Computer Scientist
    Info: Tim invented the World Wide Web

  • William Henry“Bill”Gates

    William Henry“Bill”Gates
    Name:William Henry“Bill”Gates
    Year:October 28 1955
    Place:America
    Job:business magnate philanthropist
    Info: The co- founder and Chairman of Microsoft. He is consistently ranked among the world’s wealthiest people.

  • integrated circuit

    integrated circuit
    Info:integrated circuit is an electronic circuit manufactured by lithography, or the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material

  • microprocessor

    microprocessor
    this is digital data also cpu.

  • IBM personal computer

    IBM personal computer
    info:this is original computer