高一英语必修2Unit3Computers课件.ppt

Unit 3 Computers Who Am I?,Guessing game,1. With me you can watch different programmes just at home. Im a machine that has a screen with moving pictures and sounds. But watching me too much is bad for your eyes.,TV set,Who Am I,2. I am a machine which moves very fast on four wheels. You need a license(执照) and must be very careful when you drive me. Rolls Royce, Benz and BMW are some famous kinds of me.,car,3. I am a machine which is a good helper in doing house work. I wash clothes for people. Who am I?,washing machine,4. A machine that you use to talk to other people even in a far-away place. We are connected by wire or radio. Now each of us often has a number. Who am I?,telephone,5.It is a machine, which you can use to type your homework, draw pictures, play games, watch movies, listen to music, communicate with your friends, gather information,Computer,it is a kind of computer which can be taken conveniently like a notebook.,A laptop,What English words do you know about computers?,What is it in English?,mouse 鼠标,What is it in English?,CPU (central processing Unit) 中央处理器,What is it in English?,Main board(主板),What is it in English?,Display / Monitor,computer,nternet,S,earch,K,eyboard,C,lick,E-,mail,B,log,B G,ill ates,E-,pal,Components of a computer,Scanner,Printer,Monitor,Floppy Disk,Mouse,Speaker,Timeline,The computer began as a calculating machine,The computer grew rapidly both in size and in brainpower.,The computer had grown as large as a room.,1960s,Computers were used in offices and homes.,Computers connect people all over the world together.,1642:_ 1822:The Analytical Machine was made by Charles Babbage. 1936:_ _ 1940s:_ _: The first family of computers was connected to each other. 1970s:_ Now:_,Fill in the blanks: I began as a _ machine in 1642 in France. In 1822 I was built as an _ machine. Then in 1936 Alan Turing wrote a book and built a _ machine. As the years have_ _, I have been made _ . There were times when my size _ changed. And my memory became _ large _ I couldnt believe it. In the 1960s they gave me a family_ by a network. I was able to _with others through the World Wide Web. Since the 1970s many new applications _ for me.,calculating,analytical,universal,gone by,smaller,totally,that,connected,have been found,share my knowledge,so,1._ 2._ 3._ 4._ 5._ 6._ 7._ 8._ 9._ 10._,complete change in ways of thinking ,working , etc. connected computer system to make things easier to find the answer using numbers can be moved easily from place to place to work out the answer to a problem to travel around an area to find out about it completely anyway activity of managing money,finance,anyhow,totally,explore,solve,mobile,calculate,simplify,revolution,network,Find the word or expressions fro each of the following meanings from the text.,2 Complete the passage with the words below,My brother was very interested in computers and enjoyed writing programs of his own. He used to download information from the Internet and made good use of it. He liked to _the World Wide _ and used the Internet to communicate with computer programmers all over the world. When he went to university he studied IT( information _) and developed a special interest in _ intelligence. After developing special _ of the computer, he hopes to design an _ robot which can think _ and look like a human being, but in _ he has a long way to go.,explore,Web,technology,artificial,applications,intelligent,logically,reality,Changes of the machine,Calculat