必修二 uni3 unit 3 warming up and reading精选.pptVIP

* * Unit 3 Computers ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? Warming up Reading An abacus A calculator A huge computer A PC A desktop computer LCD computer A notebook computer A laptop computer palmtop keyboard mouse monitor screen speaker host computer Can you name the following things? CPU hard disc chips CD / DVD-ROM CRT monitor LCD monitor / motherboard keyboard mouse modem scanner printer speaker floppy disc USB flash disc CD / DVD / VCD MP3 player internal memory Questions 1)Which parts belong to Input Devices? 2)Which parts belong to Output Devices? 3) Which parts belong to External Storage Devices ? keyboard, mouse, scanner, CD-ROM, DVD-ROM, … monitor, printer, speaker, overhead projector, … hard disc, floppy disc, USB flash disc, CD / DVD / VCD, … Which of them are the important parts or necessaries of a computer? CPU hard disc chips monitor keyboard mouse internal memory √ √ √ √ √ √ √ What do they have in common? The expressions of giving opinions: I think that… In my opinion… I believe that… What’s your reason? Why do you think so? What can we do on a computer and through the Internet? Discussion I use the computer and / or Internet to: listen to music watch movies play games communicate with my friends type my homework draw pictures Gather related information for my lessons Buy the things I like, e.g. books and clothes Who am I? Reading Read the passage and try to get the main idea of it . The main idea of the Reading: It tells us the ________ and ____________of computers. history development listen to the tape: 2 Who was the first person to invent the earliest computer? 3 Who was the real father of the computer? Charles Babbage Alan Turing 1 Who am I? (Please pick out three sentences to support your idea.) 1 I was built as an analytical machine designed by Charles Babbage( who was the first