牛津上海版英語九上Chapter 2 Computers課件

Chapter 2Question discussion:What do you do with computers?Do you know the names of these?monitorkeyboardfloppy diskdrivespeakersCD-ROMmouseFill in the blanks:l 1.The _ shows words and pictures.l 2.You use the _ for typing in formation.l 3.The _ _ records information.l 4.The _ helps you to control the computer.l 5.The _ _ contains all the computers electronics.l 6.We can hear the sound from the _.l 7.We put disks into the _ in the main unit.monitorkeyboardfloppydiskmainunitspeakerdrivesmouseHidden helpersQuestions:lDid you see computers many years ago?lAre they the same size?lWhere can you find the tiny hidden computers?What kind of jobs can a computer do?l Fill in the blanks:Computers can _ very fast.They can also _,_ and draw things.They can _ you and _ _ with you.They can _ railways and _ aeroplanes and spaceships.calculatetypeprintteachplaygamesoperateflyIs 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.2.But computers cant be better than doctors,judges and teachers at doing their jobs.3.We will have nothing to do if computers do most of our work.4.Computers have changed our lives a lot.TDKFTHow do we give computers instructions?lLook at this and think 10 PRINT AREA CALCULATOR 20 PRINT 30 PRINT Type:Rectangle TRIANGLE OR CIRCLE 40 INPUT s 50 REMCD-RomsQuestions:How many pages of writing can a CD-Rom hold?What does a CD-Rom contain?Whats the advantage of a CD-Rom?Brainstorming:What will happen to us if computers can do our jobs?What will happen to the world if computers control the world?