,Welcome,Unit 3 Computer,课时分配,Warming up,The development of computer P17 Look at the pictures. Talk about each of them. Discuss what they have in common.,An abacus,A calculator,A PC(=personal computer),A notebook computer/laptop,A huge computer,An abacus is an old calculating machine used in China until now. A huge computer is built to solve some mathematical problems. But it is too big. A calculator is a new calculating machine which can solve a large number of mathematical problems. A PC is a personal computer which can solve all kinds of problems and is widely used now. A notebook computer is a kind of useful computer which can be taken conveniently like a notebook.,You are asked to use the following expression in your discussion. I think that In my opinion I believe that Why do you think so? Whats your reason?,Discussion,I think they all can calculate something.It can deal with some maths problem.,I believe that they are our good friends.In our everyday life.we can not finish our work quickly without them.,In my opinion ,people improve abacus,make it more useful and make it a computer.They are being used widely and conveniently in the world.,Soft disc (floppy disc),CD-ROM,printer,scanner,mp3,U S B,Some Information about the computers and the internet,Hardware Software Host Output Programs Memory Drives Desk-top computer Business computer Digital movie,硬件,软件,主机,输出,程序,内存储器,驱动器,台式计算机,商务计算机,数字影像,Chat rooms ,net bar, chat bar On-line friends Be on-line, on the internet Down-load files Send and receive e-mail Web fans Internet sites E-mail box Electronic mail Local Area Network Log in Log out netizen,网吧,网友,上网，在线,下载文件,收发邮件,网迷,网址,电子邮件,电子邮件箱,局域网,登陆,注销,网民,Floppy disc,chips,monitor,modem,CD-ROM,scanner,Key-board,printer,Using words and expressions Fill in the blanks with the proper words in the box,Complete the sentences with some of the words in the box.,Monitor, mouse, keyboard, hard disc, floppy disc ,CD-ROM, printer, modem,A_ is used to see your data on a computer . A_ or disk is the main device that a computer uses to store information. A _is a machine for printing text or pictures onto paper ,especially one connected to the computer. A_ is used to put data into a computer . A_ _is often used to connect computers to each other though phone lines . Data can also be stored in a _,which is small and can be carried easily. A_ is a disc that contains computer data. It can store a large amount of data.,monitor,hard disk,printer,keyboard,modem,floppy disc,CD-ROM,Compact Disk Read only Memory,Discussion,What can computer be used for? I think that In my opinion I believe that Whats your reason? Why do you think so?,I use the computer or Internet to:,type my homework draw pictures play games communicate with my friends. gather related information for my lessons buy the things I like, eg books and clothes. listen to music watch movies.,Pre-reading,What do you know about computer?For example,can you name some parts of computer? 2. How have computers changed our lives?,mouse,keyboard,monitor,Listen to the tape and answer the questions.,1. Who am I?,Who was the first person to make the earliest computer? A. Alan Turing B. Charles Babbage C. Charles Turing,3.When was the “universal machine” built? A. In 1822 B. In 1642 C.1936,computer,(B),(c),Read the text again and find out,the changes of computer,Changes of the computer:,Calculating machine,Analytical machine,Universal machine,Artificial intelligence,network,(In 1642),(In 1822),(in 1936),(In the 1960s),internet,(In the 1970s),1.Where were you in 1642?,3 What were you called in 1936?,4 What did you get in the 1960s?,What happened to you in the 1970s?,2 What happened to you in 1822?,1 Where were you in 1642? 2 What happened to you in 1822? 3 What were you called in 1936? 4 What did you get in the 1960s? 5 What happened to you in the 1970s?,In France,I was built as an Analytical Machine by Charles Babbage.,Universal machine.,I got my new transistors.,I was brought into peoples homes.,Comprehending,1 Who is the speaker in this story? 2 Write down three sentences from the story to support your idea.,A computer.,1 Then in 1822 I was built as an Analytical machine by Charles Babbage. 2 My real father was Alan Turing, 3 However, people thought I was simple-minded until they discovered I had “artifical intelligence.”,Look at the timeline below.Fill in the blanks with in-formation from the reading above. Timeline 1642:_ _: The Analytical Machine was made by Charles Babbage 1936:_ _ 1960s:_ _: The first family of computers was connected to each other 1970s:_ Now:_,The computer