1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

Chapter 2

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

Question discussion:What do you do with computers?

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

Do you know the names of these?

keyboard drive

monitor

mouse CD-ROM floppy disk speakers

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

Fill in the blanks:monitor shows words and pictures. 1. The ____ keyboard for typing in formation. 2. You use the _____ floppy _____ disk 3. The ____ records information. mouse helps you to control the 4. The _____ computer. main unit 5. The ______ _____ contains all the computer’s electronics. speaker 6. We can hear the sound from the _______. 7. We put disks into the ______ in the main unit. drives

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

Hidden helpersQuestions: Did you see computers many years ago? Are they the same size? Where can you find the tiny hidden computers?

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

What kind of jobs can a computer do? Fill in the blanks:calculate ◆Computers can ______ very fast. type print ◆ They can also _____, _____ and draw

things .teach play games with ◆ They can _____ you and _____ _____

you.operate fly ◆ They can _____ railways and _____

aeroplanes and spaceships.

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

Is a computer cleverer than I am?⊕Why do we say a computer cleverer than human beings? True False or DK? 1. One day computers may be able to do most things that a human brain can do .T

2. But computers can’t be better than doctors, judges and teachers at doing their jobs.DK

3. We will have nothing to do if computers do most of our work. F4. Computers have changed our lives a lot.T

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

How do we give computers instructions? Look at this and think 10 PRINT 20 PRINT 30 PRINT AREA CALCULATOR

40 INPUT 50 REM

Type: Rectangle TRIANGLE OR CIRCLE s

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

CD-RomsQuestions: ●How many pages of writing can a CDRom hold? ● What does a CD-Rom contain? ● What’s the advantage of a CD-Rom?

1.1 Chapter 2 Computers 课件(牛津上海版九年级上)

Brainstorming:What will happen to us if computers can do our jobs? What will happen to the world if computers control the world?