1、Unit 3 ComputersHeavy!Difficult!Hard!Tired!1.Easy!2.Fast!3.Free!keyboardmousemonitorscreenspeakerhost computercamera What do they have in common?an abacusa calculatora desktopa notebook computera laptopdigital camera a robot(What do they have in common?)I think that In my opinion I believe that What
2、s your reason?Why do you think so?1.They can be used for calculating.2.They can deal withmaths problems.3.They are our friends.4.They are useful and helpful.Discussionwork for us in Mars(火星)Whats next?carry thingswork in wars (战斗)仿真机器人entertainment娱乐What do you think will be the next development?CD-
3、DVD-ROM-DVD RWCRT monitorLCD monitorCPUhard discchips/motherboardsome hardware:使用阴极射线管(Cathode Ray Tube)的显示器Liquid Crystal Displaykeyboardmousemodemscannerprinterspeakerfloppy disc/diskUSB flash discCD/VCD/DVDMP3 playerMP4 playerMemory:(存储器)移动硬盘USBFlash disc 1 TB 固态硬盘1 T硬盘Hard disc:Core 2 Duo酷睿2:4核龙
4、芯8核cpu:other 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Reading:Who am I?Skimming:Read and answer these questions:2.Who was the first person to
5、 invent the earliest computer?3.Who was the next important person to design computers?Charles BabbageAlan Turing1.Who am I?A computer.timeline1642:1822:1936:1940s:1960s:1970s:Now:Scanning:The computer began as a calculating machine.the Analytical Machine was built by Charles Babbage.The computer gre
6、w 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 The history of computersthe second generation(1956-1963)the third ge
7、neration(1964-1971)the fourth generation(1971-)The first generation(1945-1956)The development of computers:Calculating machineAnalytical machineUniversal machineArtificial intelligenceComputerInternet计算器分析机万能机,通用机器人工智能Develop-mentEarly daysNameFunctionPoorStrongA _ machineSimplify difficult sumsAn _
8、 machineThink logically and produce an answer quicklyA _ machineSolve difficult _calculatinganalyticaluniversalmathematical problemsDevelop-mentNetwork times_ stored inTubesLargeSmall_Small chips_NarrowWideFinance_RobotsMobile phones_Space rocketsMedical operations MemoryTransistorsApplications Comm
9、unicationTradeIntensive reading:Underline the phrases&sentences that you think are importantStar 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早些时候我并不
10、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。followedhugesimple-mindeddiscoveredP1 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 _ by a netw
11、ork.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 bytimestotally standingconnectedAdvantages and disadvantages of the computers.Discussion advantageswe cancommunicate with friendslisten to the musicsee films&watch newsplay gamesdo shoppingsave a lot of time do a lot of useful thingsDisadvantagesSome people especially the teenagers abandon(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.Homework1.Review the text2.Recite Para one3.Finish Ex.1/2 on Page 20.
