That was my first time to make an all-English presentation, which toke me several weeks to prepare. But all of the work for that are worth. I’ve learnt much from it, especially some technical terms about computer which I haven’t known before.

The topic I chose was the Computer History, because both of my major in college and my job are computer-related, so I thought it could be the easiest and most familiar subject for me. But you know, the things never happen with the rules, I was wrong, that was not an easy work. Hmmm… You guys might know that the first computer was born in 1946 in Philadelphia, actutally, the first computer can be dated to 19th century(I mean the mechanical computer, because the computer is not just limited in electronic one), and some memory aid devices can be dated to the year B.C. Beside that, you gota know some technical terms, like vacuum tube, transistor and many other things like that.

If you guys want to learn English well, just keep writing, it makes you better in grammar and vocabulary.

Well, here are the video, slider and presentation draft, just enjoy it and give me some advice if you’ve got 😉

video

slider

presentation

the presentation draft

computer history

  • (first page) Computer History
    • Today, I am here to talk about computer history. Some of you guys maybe know that the first computer was born in 1946 in America for United States Army.
    • Actually, the history of computer is not just like that. Today, I will bring you something about computer you haven’t known before.
  • (warm up) Asking a question
    • Okay, Before we begin, let me ask you guys one question. Do you know how the ancient people calculate and record the numbers?
    • computer? calculator? or alpha go?
    • O..kay, you know, in the ancient world, there was no any computer, calculator, pen, or even paper,
    • Okay, let me show you the answer, follow me~
  • How to count the numbers?
    • Fingers (with a fingers photo)
      • I think the most common way is to use one-to-one counting way with your fingers.
      • but there are two problems, the first one is that we can’t keep the number state with our fingers for a long time, because we have to use both our hands to do many things.
      • and the second problem is that we just have ten fingers, it’s totally not enough, even adding your toes, you have only twenty, it’s not enough as well.
      • But don’t worry, our ancestors were so smart, they would find something to resolve those problems.
      • Okay, let’s see how the ancient people to record the numbers.
  • How to record the numbers?
    • Tally stick
      • Tally stick was one of the oldest memory aid devices.
      • It was made of animal bones and was used to record numbers and some sample messages.
      • As the development of human civilization, those devices are not powerful enough to resolve the complex arithmetic problems.
      • So an amazing and powerful calculating device was invented.
  • How to calculate the numbers?
    • Abacus
      • The inventing of abacus was for arithmetic tasks.
      • Roman abacus
        • The Roman abacus was invented much earlier than the Chinese one.
      • Chinese abacus
        • In China, we call this one as Suanpan.
        • It can do addition, subtraction, multiplication and division.
        • For an abacus skillful user, who can do addition and subtraction as fast as the person who uses electronic calculator.
        • Actually, the Chinese abacus is a representation of the human fingers: the 5 lower rings represent our 5 fingers and the upper tow rings represent both of our hands.
    • OKay, let’s move to something more mechanical.
  • Mechanical generation
    • Analytical Engine
      • It was the first mechanical and programmable computer, invented by Charles Babbage, who was considered as “father of the computer”.
      • The input of data and programs can be provided via punched cards.
      • For output, there must be a printer for this machine, because there was no screen, projector or any other display devices at that time.
      • However, all the parts of this machine had to be done by hand, this was the biggest problem for a device which contained thousands of parts. In other words, while this machine was working, there must be a lot of operators standing by it.
      • Eventually, as you can see, this project was stopped by the decision of the British Government with cutting off financial support.
      • It seems that everything was over, but in fact, the concept of this machine inspires the next generation computer a lot.
  • Vacuum tube generation
    • vacuum tube
      • What is vacuum tube?
      • The vacuum tube is a switch to control the current going from a side to another side.
      • (Yeah, it’s a electric switch.)
    • ENIAC (Electronic Numerical Integrator and Computer)
      • It was the first all-electronic programmable computer.
      • It was built in 1946 for the United States Army.
      • It could do addition 5000 times in one second, a thousand times faster than any other machine at the same generation.
      • By the way, it just like a monster, it occupied such a large place to 167 m2. And the power requirement was so crazy, whenever it was switched on, the lights of all city were dimmed.
      • Yeah, It’s crazy.
  • Transistor was invented
    • Transistor was a electronic switch as well, but it’s made of silicon.
    • And it’s more smaller, lower power consumption.
    • TRADIC
      • TRADIC was not the first transistor computer in the world, but it was the first transistor computer in the USA
      • It was born in the legendary place — Bell Labs.
      • Yeah, Bell Labs was quite famous in the world.
  • Integrated circuit
    • The Integrated circuit is a small chip with large numbers of tiny transistors.
    • There are two main advantages over integrated circuit: lower cost and higher performance.
    • Cost is low because a lot of transistors are integrated into a small chip, so it needs less material.
    • Performance is high because the IC components switch quickly and consume little power.
  • Microprocessor
    • xx
  • Artificial Intelligence
    • AI is that the human intelligence is shown by the machines.
    • Alpha go
      • It was the first time for a machine to beat a human professional Go player.
      • Yeah, that was a quite hot news last year.
  • Let’s review the generations we have mentioned before

  • Generation of computer
    • First generation (1946-1957)
      • Vacuum tube
    • Second generation (1957-1964)
      • Transistor
    • Third generation (1964-1971)
      • Integrated circuit
    • Fourth generation (1971-now)
      • Microprocessor
    • Fifth generation (present and beyond)
      • Artificial Intelligence
    • As you can see, all the generations are toward smaller, faster, …
    • I believe that the machines can do more and more complex and significant things in the future.

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