必修2 Unit 3 Computers Warming up课件（30张PPT）

Unit 3 Computers
Period 1
Warming up
A woman?
A handbag?
Computers
Riddles(谜语):
Who am I?
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 算盘
Riddles(谜语):
Who am I?
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
Riddles(谜语):
Who am I?
I can be used for calculating. Besides, I can also be used for watching movie, 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.

notebook computer
Do you know who I am?
Riddles(谜语):
Who am I?



A huge computer


A PC



the history of the computer
Palmtop 掌上电脑
laptop 手提电脑
abacus
caculator
How much do you know
about a computer???
Give the English name of the
following pictures of the
computer components (组件)
tube
transistor
samll chips
memory
My become so large that even I

couldn't believe it!
What is it in English??
Main board(主板)
What is it in English??
hard disc
硬盘
What is it in English??
CPU (central processing Unit)
中央处理器
What is it in English??
Keyboard (键盘)
What is it in English??
Monitor
显示器


screen
What is it in English??
mouse
鼠标
DVD ROM






Heavy!
Difficult!
Hard!
Tired!

Easy!
Fast!
Free!




keyboard
mouse
monitor
screen
speaker


host computer
主机
camera

monitor

screen

mouse

keyboard

hard disk

DVD-ROM
(1) the part of the computer that looks like a television.
(2) the part of the monitor that you look at.
(3) something you use to click on things (files, etc.)
(4) the part of the computer that you type on.
(5) the part of a computer that stores information.
(6) The part of computer that we can put a CD in.

Work out the names
Write out all the words you know about computers.
computer
monitor
click
software
search
update
download
Internet
keyboard








What do they have in common?
an abacus
a calculator
a desktop
a notebook computer
a laptop
(What do they have in common?)
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.
Discussion
Analytical machine
Charles Babbage



Alan Turing
Universal machine
Turing machine
I began as a caculating machine in France in 1642.
It took nearly 200 years before I was built as an analytical machine by Charles Babbage

My true father Alan Turing wrote a book about how I could be made to work as a “universal machine”.

Four a group read the article and tell the story.
Which story do you like best?
explore the Moon and Mars(火星)
Applications
I was sent to ...
（应用）
carry things
fight in wars (战斗)
I have been made to...
仿真机器人
entertainment
娱乐
What do you think will be the next application?
communicate 交流
I have also been put into robots and used to mobile phones
as well as
help with medical operation.
I have become very important in ...
pregnant
communication
keyboard
Modem
调制调解器
Scanner
扫描仪
Printer打印机
Speaker
音响
other useful words and expressions about computer:
Network网络
Virus　病毒
Download 下载
Upload 上传
Program　程序
Website　站点
Hacker 黑客
Home page 主页
Password　密码
Desk top 桌面
User name 用户名
Click 点击
Software 软件
Hardware 硬件

Home page 主页
Homework
预习Reading部分，
把新单词的翻译写到课文中去