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1、 Unit 3 ComputersUnit 3 Computers Period 1Period 1 Warming up Warming up2021/8/11星期三1Heavy!Difficult!Hard!Tired!2021/8/11星期三21.Easy!2.Fast!3.Free!2021/8/11星期三3keyboardmousemonitorscreenspeaker host computercamera2021/8/11星期三4 What do they have in common?an abacusa calculatora desktopa notebook compu
2、tera laptop2021/8/11星期三5digital camera a robot2021/8/11星期三6(What do they have in common?)I think thatIn my opinionI believe thatWhats your reason?Why do you think so?1.They can be used for calculating.2.They can deal with maths problems.3.They are our friends.4.They are useful and helpful.Discussion
3、2021/8/11星期三7work for us in Mars(火星火星)Whatsnext?2021/8/11星期三8carry thingswork in wars (战斗战斗)2021/8/11星期三9仿真机器人entertainment 娱乐娱乐What do you think will be the next development?2021/8/11星期三10CD-DVD-ROM-DVD RWCRT monitorLCD monitorLCD monitorCPUhard discchips/motherboardsomehardware:使用阴极射线管(CathodeRayT
4、ube)的显示器LiquidCrystalDisplay2021/8/11星期三11keyboardmousemodemscannerprinterspeaker2021/8/11星期三12floppy disc/diskUSB flash discCD/VCD/DVDMP3 playerMP4playerMemory:(存储器)2021/8/11星期三13移动硬盘移动硬盘USBFlash disc 1 TB 固态硬盘固态硬盘1T硬盘硬盘Harddisc:2021/8/11星期三14Core2Duo 酷睿酷睿2:4核核龙芯龙芯8核核cpu:2021/8/11星期三15other useful
5、words and expressions about computer:Network网络网络 Virus病毒病毒Download 下载下载Up load 上传上传Program程序程序Website站点站点Hacker 黑客黑客Home page 主页主页Password密码密码Desk top 桌面桌面User name 用户名用户名Click 点击点击Software 软件软件Hardware 硬件硬件Home page 主页主页2021/8/11星期三16Reading:Who am I?2021/8/11星期三17Skimming:Read and answer these que
6、stions:2.Who was the first person to invent the earliest computer?3.Who was the next important person to design computers?Charles BabbageAlan Turing1.Who am I?A computer.2021/8/11星期三18timeline1642:1822:1936:1940s:1960s:1970s:Now:Scanning:The computer began as a calculating machine.the Analytical Mac
7、hine 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 all over the world together.the first family of computers was connected to each other 2021/8/11星期三19The
8、history of computers2021/8/11星期三20the second generationthe second generation (1956-1963)(1956-1963)the third generation (1964-1971)the fourth generation (1971-)The first generationThe first generation (1945-1956)(1945-1956)2021/8/11星期三21The development of computers:Calculating machineAnalytical mach
9、ineUniversal machineArtificial intelligenceComputerInternet计算器计算器分析机分析机万能机万能机,通用机器通用机器人工智能人工智能2021/8/11星期三22Develop-mentEarly daysNameFunctionPoorStrongA _ machineSimplify difficult sumsAn _ machineThink logically and produce an answer quicklyA _ machineSolve difficult _calculatinganalyticaluniversa
10、lmathematical problems2021/8/11星期三23Develop-mentNetwork times_ stored inTubesLargeSmall_Small chips _Narrow WideFinance_RobotsMobile phones_Space rocketsMedical operations MemoryTransistorsApplicationsCommunicationTrade2021/8/11星期三24Intensive reading:Underline the phrases&sentences that you think ar
11、e important2021/8/11星期三25Star sentences:P1 L2 I _instructions from cards with holes.P1 5 Earlier I was not very big,but then I became _.P1 L6 However,people thought I was _ until they _ I had“artificial intelligence.”我执行穿孔卡的指令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，可是，人们认为我头脑
12、简单，直到发现我有人工智能时，直到发现我有人工智能时，他们才不那么想了。他们才不那么想了。followedhugesimple-mindeddiscovered2021/8/11星期三26P1 L8 As the years have _,I have been made smaller and smaller.P2 L1 There were _ when my size was _changed.P2 L3 But I was always so lonely _ there by myself,until in the early 1960s,they gave me a family
13、_ by a network.随着岁月的流逝，随着岁月的流逝，我被做得越来越小了我被做得越来越小了.有段时期我的体积完全变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，直到但是我总是孤孤单单地站在那里，直到60年代初，年代初，人们才人们才给了我一个用网络连接的家庭。给了我一个用网络连接的家庭。gone bytimestotally standingconnected2021/8/11星期三27Advantages and disadvantages of the computers.Discussion 2021/8/11星期三28 advantages we cancommunic
14、ate with friends listen to the music see films&watch news play games do shopping save a lot of time do a lot of useful things DisadvantagesSome people especially the teenagers abandon(沉迷于沉迷于)themselves to the computer games and chatting on the Internet.As a result,they have little time to study.Some people use the computer wrongly.2021/8/11星期三29Homework1.Review the text2.Recite Para one3.Finish Ex.1/2 on Page 20.2021/8/11星期三302021/8/11星期三31