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unit3 computer


Reading

Who am I

Who was the first person to devise the earliest computer? Who was the next important person to design computers?

Charles Babbage

Alan Turing

How much do you know about the development of computers?

notebook laptop

abacus

PC

Huge computer

calculator

New Words and Expressions
Intelligence Analytical machine Universal machine Transistor Artificial intelligence Technological revolution function
智力
分析机 通用机 晶体管 人工智能 科技革命 功能

Topic sentence of each paragraph

Para1 :
Over time I have been changed quite a lot

Para2: Para3:

These changes only become possible as my memory improved. Since 1970s many new applications have been found for me.

Scanning:
1822 1936

Time

1642 The computer began as a calculating machine.
The Analytical Machine was made by Charles Babbage.

“universal machine” was built Grew rapidly both in size and in brainpower

1940s Computers had grown as large as a room 1960s
The first family of computers was connected to each other.

1970s Computers were used in offices and homes. now Computers connect people all over the world
together.

The Development Of Computers
calculating machine Analytical machine

Universal machine

1642
Internet

1822
PC

1936
Artificial intelligence

now

1970s

1960s

What will the computers be like in the future?

Time 1642
1822

Invention
Calculating machine Analytical machine Universal machine

Description
be used to calculate _______ Built by Charles Babbage follow ____________; holes instructions from cards ____with _____ Alan Turing Built by ________; solve mathematical ___________ problems; simpleminded and artificial intelligence; the huge size: small—____-small Get new________; be changed; transistors small & thin; get cleverer & quicker; network be connected by____; share…with; talk to

1936

1960s

Network



1970s Now

Personal Computer Internet

homes be brought into______ be used to deal with…and communicate with..; serve

Deal with long sentences: 1).Find a sentence to replace the following one. As time went by, my memoryhas become so good, as good as an elephant, that I never forget anything that people have told me. Over time my memory has developed so much that, like ______________________________________________ an elephant, I never forget anything I have been told. _______________________________________________ 2). Translate the following sentence. But I was always so lonely stangding there by myself, until in early 1960s they gave me a family connected by a network. _______________________________________________ 但是我总是孤孤单单地站在那里,直到二十世纪六十 年代初,人们才给了我一个用网络联成的家庭。 ______________________________________________

Summary
calculating The computer began only as a___________ machine in 1642 and then in 1822 it was built as an Analytical Machine _________ _______by Charles Babbage. Later, Alan Turing built a universal _________ mathematical ________to solve any ______________problem. At first, the machine huge computer was not big but then it became_____ and later ____ became smaller and ________. _______ smaller

In the early 1960s, computers could be connected by a network _________ and it was brought to people’s homes in 1970s. Since then,computers have become important in communication finance trade ______________, ____________and ________. And it also has been put into ________ _______ and sent to ______the explore space rocket Moon and Mars. __________, its goal is to _________ Anyhow provide with life ____ ___ __. humans ______a ___ of high quality

discussion
1.What do you think are the advantages and disadvantages of computer?

Common / usual /ordinary /general /normal
1.My letter, addressed to the wrong number, reached him a month later______.

A. As expected

B. than normal

C. than usual

D, as usual

2. Trees of this kind are so _____ that they can be seen everywhere.

A. common B. usual

C. special

D. normal

3. As you know, whether the person will be elected president is a matter of________ interest. A. general B. common C, ordinary D. mostly 4. He didn’t go into detail on the subject. He just spoke_____.

A. In particular

B. in common

C. in short

D. in general

5.After the earthquake, it took them quite some time to bring the city back to ______.
A. common B. general C. usual D. normal 6. People who commit crimes like that aren’t mentally ____. A. usual B. general C. normal D. common

completing the chart below.
The history of computer analytical machine

calculating machine

universal machine

The “father” Charles (inventor) Babbage Alan Turing

Internet

PC (desktop /notebook)

artificial intelligence


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