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高中英语必修二unit3PPT课件
1936 Alan Turing wrote a book to describe how computers could be made to work.
1940s Computers had grown as large as a room.
1960s The first family of computers was connected to each other.
who the speaker is. Write down 3 sentences to support your idea. It is a computer.
● I was built as an Analytical Machine by Charles Babbage.”
●”My real father was Alan Turing ....”
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2) What can you infer from the text? A. The computer has artificial intelligence. B. The computer changes a lot over the years. C. The computer was not connected by a network until in the early 1960s. D. Now the computer can only be used to deal with information.
● I was able to share my knowledge with others through the World Wide Web.
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Scanning:
Timeline
1642 The computer began as a calculating machine.
1822 The Analytical Machine was made by Charles Babbage.
became so large that I couldn’t believe it! 10
Comprehending:
1. Choose the best answers
1) What’s the main idea of the text? A. The computer wants to find “who he is”. B. The functional change of the computer. C. The computer becomes popular around the world. D. The history of the computer.
1
Guess!
A handbag?
A toy?
2
Guess more:
I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they don’t like me now.
1970s Computers were used in offices and homes.
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True or False
1. Alan Turing built ana Aunniavleyrtsicaal lmMaachchininee to
solve any mathematical problems.
F
2. People began to realize that the computer got
cleverer and quicker with time passing. T
3. The computer began to serve the human race
since itswbaisrtbhrought into people’s homes. F
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2. Questions
Q1: How did the computer work as an Analytical Machine? The computer followed instructions from cards with holes.
Do you know who I am?
notebook computer
5
abacus
Caculator计算器
A h电脑) laptop(手提电脑) A PC 6
Who am I ?
7
Skimming: Go over the story to find out
Do you know who I am?
abacus
3
I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems.
Do you know who I am?
4. Speinocpelethaero1u9n7d0st,htehewcoormldptuhtreoruwghasthueseIdntbeyrneTt.
5. TIhbeeclaarmgeerstmhaelcl oamndputhteinr ibsu, tthIegmotocrleevmeermeroarnyd ict lheavse.rer, quicker and quicker. And my memoFry
calculator
4
I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, because I’m small enough for you to take me with you.