高一英语Unit3 computers i课件 新课标 必修2

The technology develops so quickly that many new things appear in human being’s life. Let’s guess what they are:

Guess :
I am very old now. I was born in China. Many people

used me for calculating(计算) in the past, but now I am a bit lonely because they don’t like me now.

Do you know who I am?

abacus

I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical(数 学的) problems.

Do you know who I am?

calculator

Solve a riddle : one thing
It has a big face with many keys It can download information It has two big ears which can play music You can watch TV or see a movie using it It can be seen in the office, classroom and at home. guess

Do you know who I am ?

“银河”巨型计算 机

A huge computer

A PC= personal computer

A notebook computer

We can see many brands of computers
Lenovo 联想 Haier 海尔

惠普 神州 Dell Tinghuatongfang清华同方 TCL Acer宏基

thinking 1. What do they have in common?
（Using some of the following expressions in your discussion.）

I think that…

In my opinion…

I believe that…

What’ s your reason?

Why do you think so? 1.They can be used for calculating.

2.They can deal with maths problems.
3.They are our friends.

4.They are useful and helpful. ……

What makes up the computer? And can you name each part ?
NIC/内存

screen

CPU/处理器 (Central processing unit)

Main board/主板 mouse

Sound box Key-board

headphone

Hard disk

GPU/显卡

Ⅳ. Read through the words in the box. Use some of
them to name each part of a computer in the box.
Monitor mouse CD-ROM printer keyboard scanner hard disc floppy disc modem Chips CPU

floppy disc

chips

monitor modem CD-ROM

printer

keyboard

scanner

Match the words with their meanings.
1 A monitor is
2 The screen is 3 A keyboard is (a) the part of a computer that stores information. (b) the part of the computer that you type on. (c) the part of the computer that looks like a television (d) something you use to click on things (files, etc.). (e) the part of the monitor that you look at. (f) The main device that a computer uses to store information.

4 A mouse is
5 A CD-ROM is 6 A hard disk is

Reading

Unit 3 Computer

Scanning

Scan the text and then answer the following questions: 1.Who is the speaker? 2.What the text might be about?

1.Who is the speaker ?
It is a computer.

? This reading passage is mainly about the history and thedevelopment of the computer.

Find out three sentences to support who the speaker is in the story. 1.Then in 1822 I was built …. (Itself was the first design of a computer)
2.My real father was Alan Turing. (He designed the first real computer.) 3.However, people thought I was simple-minded until…., (It has artificial intelligence.)

2 What happened to you in 1822?

3 What were you called in 1936?

4 What did you get in the 1960s?

1.Where were you in 1642?

What happened to you in the 1970s?

Timeline
1642: __________________________ The computer began as a _______________________________ calculating machine in France. ____: The Analytical Machine was 1822 Made by Charles Babbage. Alan Turing wrote a book to 1936:___________________________ describe how computers could _______________________________ be made to work. _______________________________ 1960s:__________________________ Computers have new _______________________________ transistors and became _______________________________ smaller.

1960s _____: The first family of computers was connected to each other. Computers were brought into 1970s: _________________________ people’s homes. _______________________________ Now:___________________________ Computers connect people all _______________________________ over the world together.

True or false
F T F F
? 1. Charles Babbage was the computers’ real father. [ Alan Turing. ] ? 2. The speaker was built as an Analytical Machine in 1822. ? 3. The speaker was called a calculating machine in 1936. [ a universal machine ] ? 4. The speaker was given a family connected by a network in the late 1960s. [ in the early 1960s ]

3. Questions
Q1: How did the computer work as an Analytical Machine? The computer followed instructions from cards with holes. Q2: In which way did computers talk to humans? Using BASIC. Q3: What does “others” (2.6) refer to? Other computers.

Q4: Why did people think the computer was simple-minded? Because the computer was made as a calculating machine and was used to solve mathematical problems.

Q5: In how many ways do we say the computer changed? What are they? ? Size: smaller

? Intelligence: cleverer
? Speed: quicker ? Function: calculating----dealing with …, communicating with… ? People’ opinion: simple-minded----clever & useful

a calculating machine

3 1
a huge computer

5

an analytical machine a notebook computer

2

4

a personal computer

Changes in size
not very big (earlier) ? 1._______________ huge ? 2._______________ ( in the past) smaller and thinner (modern) ? 3.____________________

Changes of the machine
Calculating machine Analytical machine Universal machine

PC (desktop/ notebook)

artificial intelligence

Internet

?
Time

Development in functions
calculating machine --- calculate Analytical Machine ---follow instructions universal machine--solve mathematical problems; artificial intelligence Computer share information with others; talk to each other; connected by deal with information; a network
communicate with each other

Discussion:
what other functions will computers have in the future? Or what will computers be like?

Use the following expressions:
? ? ? ? ? ? ? I think that…… In my opinion…… I believe that…… It would be nice if…… richer and richer; stronger and stronger; easier and easier

Then what should we do if we want to develop more functions of the computer?
Study hard.

Learn as much knowledge as we can. Prepare to become great scientists!

Summary

The history of computers

Name : computer 1642 Born : (time)_______ (place)_____ France My father: _____________________ Alan Turing not very big My size: 1._______________(earlier) 2._______________( in the past) huge 3.____________________(modern) smaller and thinner calculating My history: 1. 1642 ___________machine Analytical 2. 1822__________machine universal 3. 1936 __________machine transistors 4. 1960s computers with _________ PC notebook computers. 5. 1970s ______ and ________ information. My usage: 1. share ____________ 2.____________ communicate with others. 3.____________ serve the human race.

Summary
Now people can use computers to deal with information and communicate with each other around the world by the Internet . But the development of computers has a __________ long history. In 1642, the first computer only worked as a calculating machine . In 1822, an Analytical Machine was ________________ invented. In 1936 ,a universal machine was built. In the 1960s ,after getting new transistors, computers ________ smaller and smaller in size, got cleverer and became ________________ quicker and quicker cleverer in intelligence, and became________________ in speed. Then they could be connected with other humans could talk to computers by a network, and ________ them using BASIC. In the 1970s ,people began to bring them into their homes.

People say computers have more advantages than disadvantages. Do you think so?

A
advantages
Such as : Send an e-mail

B
disadvantages It is bad for your eyes

How do you use the computers in daily life？

(1). play computer games
(2). QQ（chat on line） (3). send emails to friends (4). download music and films (5). search for information

(6). do business or work
(7). use computer for school work

(8). look at photographs……

Think: Which is the most important?
Don’t spend too much time playing games!

advantages Download(下载) information See a movie or watch TV Play computer games Buy goods you want Do some chatting improve people's ability of thinking
-

disadvantages

Too expensive Addicted to playing computer games Virtual things (虚拟的) People can not write right Chinese letters
-

Homework

1.Should students surf the Internet?
net bar

2.Should students go to the net bar?
at home

Retelling

calculating machine I began as a _______ ________ in 1642 in France. In 1822 I was built as an Analytical Machine Then in 1936 Alan Turing _____ ______. universal machine wrote a book and built a _______ ______. gone by I have been As the years have___ ___, smaller and smaller but I got ____ made___ ___ _______ ____ ___,____ __ ____. quicker and quicker In the 1960s erer and cleverer connected by _____. a network they gave me a family____ __ __ Now people call it the Internet. I was brought into people’s homes _____ ____ ____ ___ in the 1970s.So I became PC. Since my birth I have truly been built to serve the human race.