1、,Unit 3 ComputersWarming up,Heavy! Difficult! Hard! Tired!,keyboard,mouse,monitor,screen,speaker,host computer,camera,DVD-ROM,CRT monitor,LCD monitor,CPU,hard disc,motherboard,some hardware:,modem,scanner,printer,speaker,floppy disc/disk,USB flash disc,CD/VCD/DVD,MP3 player,MP4 player,Memory:(存储器),o
2、ther useful words and expressions about computer:,Network网络 Virus 病毒 Download 下载 Up load 上传 Program 程序 Website 站点 Hacker 黑客,Home page 主页 Password 密码 Desk top 桌面 User name 用户名 Click 点击 Software 软件 Hardware 硬件,Home page 主页,What is PC? Speak the name on the whole.,It means: personal computer.,2. What i
3、s IT?,Information Technology.,3. What is CD-ROM?,Compact disc read-only memory.,4. What is PDA?,Personal digital assistant.,5. What is W.W.W?,World wide web.,6. 科学技术。,Science and technology.,7. 人工智能。,Artificial intelligence.,8.笔记本电脑。,Notebook computer.,What do they have in common?,an abacus,a calcul
4、ator,a desktop,a notebook computer a laptop,(What do they have in common?),1.They can be used for calculating. 2.They can deal withmaths problems. 3.They are our friends. 4.They are useful and helpful.,Discussion,work for us in Mars,Whats next?,carry things,work in wars,仿真机器人,entertainment 娱乐,What d
5、o you think will be the next development?,Reading: Who am I?,Skimming:Read and answer these questions:,2. Who was the first person to invent the earliest computer? 3. Who was the next important person to design computers?,Charles Babbage,Alan Turing,1. Who am I?,A computer.,timeline,1642: 1822: 1936
6、: 1940s: 1960s: 1970s: Now:,Scanning:,The computer began as a calculating machine.,the Analytical Machine was built by Charles Babbage.,The computer grew rapidly both in size and in brainpower.,Computer had grown as large as a room.,Computers were used in officers and homes.,Computers connect people
7、 all over the world together.,the first family of computers was connected to each other,The history of computers,the second generation(1956-1963),the third generation(1964-1971),the fourth generation(1971- ),The first generation(1945-1956),The development of computers:,Calculating machine,Analytical
8、 machine,Universal machine,Artificial intelligence,Computer,Internet,计算器,分析机,万能机,通用机器,人工智能,Intensive reading: Underline the phrases and sentences that you think are important,Star sentences:,P1 L2 I _instructions from cards with holes. P1 5 Earlier I was not very big, but then I became _ .P1 L6 Howe
9、ver, people thought I was _ until they _ I had “artificial intelligence.”,我执行穿孔卡的指令,早些时候我并不是很大，但是后来我变得非常大,可是，人们认为我头脑简单， 直到发现我有人工智能时， 他们才不那么想了。,followed,huge,simple-minded,discovered,P1 L8 As the years have _, I have been made smaller and smaller.P2 L1 There were _ when my size was _changed.P2 L3 But
10、 I was always so lonely _ there by myself, until in the early 1960s,they gave me a family _ by a network.,随着岁月的流逝， 我被做得越来越小了.,有段时期我的体积完全变了,但是我总是孤孤单单地站在那里，直到60年代初， 人们才 给了我一个用网络连接的家庭。,gone by,times,totally,standing,connected,What are the advantages anddisadvantages of the computers? In my opinion,I ca
11、n use the computer to.,Discussion,We can use the computer to.,listen to music,Watch movies,search for ,communicate with,do shopping,Advantages We can use the compuers to 1. use a computer for school work 2. play games on the computer 3. send emails to friends 4. download music and films 5. go shoppi
12、ng on line 6. use QQ to make friends 7. communicate with others,8. use the Internet to search for information 9. surf the web for fun 10. read news both at home and abroad, read books and magazines,Disadvantages Some students may get too addicted (沉溺于)to it .Some students waste too much time in play
13、ing computer games.Some students spend too much time in chatting with others and may be cheated (欺骗)by someone on line.As a result, they have little time to study It is bad for our eyes and health to spend long time in front of computers.,Summary about the text. The computer _ a calculating machine
14、in 1642, then in 1822, it was built as an _ by _. At the year of 1936, Alan Turing _ to describe how computers _to work , and build a “universal machine” to solve_. With the development of _,began as,Analytical Machine,Charles Babbage,wrote a book,could be made,mathematical problem,information techn
15、ology,in the 1960s, computers had new _and became_, then were connected to each other by _. As the years had _, computers were_,peoples homes. Now computers have becomethe most important _to _all over the world together.,transistors,smaller and smaller,a network,gone by,brought into,tools,connect people,1960s,Consolidation: Retelling,Homework:,Read the passage fluently. 2. Do Ex on period 2. 3. Retell the passage .,
