Unit 3 Computers

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Unit 3 Computers
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Riddles(??)
Computers
A handbag?
A toy?
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Riddles(??)

• 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 dont like me
  now.
• Do you know who I am?

abacus
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Riddles(??)

• 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?

calculator
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Riddles(??)
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 Im small enough for you to
take me with you.
Do you know who I am?
Notebook / laptop
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the history of the computer
PDA / Palmtop
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in common for or by all of a group
????????? the land owned in common by
the residents ??????? in common
???have??,? have nothing in common ????? have
little in common ??????? have something in common
????? have a lot in common ???????
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What do they have in common?
Palmtop
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(What do they have in common?)
Discussion
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.

• I think that
• In my opinion
• I believe that
• What s your reason?
• Why do you think so?

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How much do you know about a computer???
Give the English name for the computer
components (??)
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What is it in English??
Main board(??)
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What is it in English??
CPU (central processing Unit) ?????
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What is it in English??
hard disc ??
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What is it in English??
Keyboard (??)
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What is it in English??
Monitor???
Screen ??
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What is it in English??
mouse ??
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What is it in English??
DVD ROM ??????
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Reading
Who am I ?
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Skimming
1.who is the speaker ?
2.Whats the passage about?
Its about the history of computer.
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Scanning
Time
1642
The Analytical Machine was made by Charles Babbage.
1936
1960s
The first family of computers was connected by a network.
1970s
now
The computer began as a calculating machine.
1822
What is the order of the text?
Alan Turing wrote a book to describe how
computers could be made to work and built a
universal machine.
Computers had new transistors and became Small
and thin.
1960s
Computers were brought into people's homes.
Computers connect people all over the world
together.
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Alan Turing
Charles Babbage
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Q how did computer change in its size,
intelligence, speed, function? And how about
peoples opinion? Size Intelligence Speed
Function Peoples opinion
smaller
cleverer
quicker
dealing with , communicating with
calculating?
clever useful
simple-minded?
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convenient laptop
smaller desktop
What are today's smaller computers like?
palmtop
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Discussion

1. What can the future computer be like?
2. What can we do by computer in the future?

Nose-top keyboard-vest
virtual keyboards ????
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You are given a chance to design a computer for
yourself. Draw a picture about it and
describe(??) what functions it has. You will be
asked to introduce(??) your computer.
(appearance functions)
Group work
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Homework
1.????,?????????,????????. 2.???P19EX1?P20EX2 3.?
???