ComputersUnit3ThedevelopmentofcomputersObjectiveTestyourknowledgeofthedevelopmentofcomputers.Wordsreviewvt.计算adj.普遍的；通用的；宇宙的calculateuniversalAtoy?Ahandbag?Acomputerisamachinewhichkeepsknowledgeinitsmemoryanddoesworkonthatknowledge.Thisknowledgeiskeptinsymbols;itiscalleddata.Acomputerusuallyhasamonitortoshowresults.However,somecomputerscanspeak.Thesecomputerscanbeusedforvoicemail.Whatisacomputer?Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacusRiddles(谜语)Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.DoyouknowwhoIam?laptopPDAPersonalDigitalAssistantIamsosmallinsizethatIcanfitinyourhand.Iusuallyhaveasmallscreenusuallybiggerthanadigitalphone,howeversmallerthanthesmallestlaptop,I’magreatwaytostoretelephonenumbers,accesstheInternet,makecalculations,andsoon.DoyouknowwhoIam?Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?calculatorIamverybig.Scientistsusemetosolvesomemathematicalproblems.hugecomputerDoyouknowwhoIam?robotI’mamachinethatworksautomatically.Icandoawidevarietyoftasks,especiallysuitablefordoingjobstooboring,difficult,ordangerousforhumanbeings.DoyouknowwhoIam?PCPersonalComputerI’masmall,relativelyinexpensivecomputerdesignedforanindividualuser.I’mbasedonthemicroprocessortechnology.Athome,peopleusemetosurftheInternetandplaygames.DoyouknowwhoIam?1.Theycanbeusedforcalculating.2.Theycandealwithmathsproblems.3.Theyareourfriends.4.Theyareusefulandhelpful.Inpairsdiscusswhattheyhaveincommon.DiscussionCanyougiveustheEnglishnamesofacomputercomponents(组件)?Tips:1.Wecanuseacomputerto…2.Itismadeupofsomeparts,suchas…keyboard键盘mouse鼠标monitor显示器screen屏幕speaker音响host主机componentsofacomputermainboardCPU(centralprocessingunit)floppydiskDVDROMUSBflashdiskprinterscannermodemscreenkeyboardmousemonitorDVD-ROMharddisk1.thepartofthecomputerthatlookslikeatelevision2.thepartofthemonitorthatyoulookat3.somethingyouusetoclickonthings(files,etc.)4.thepartofthecomputerthatyoutypeon5.thepartofacomputerthatstoresinformation6.thepartofcomputerthatwecanputaCDinMatchPDAabacuscalculatorhugecomputerPClaptopWhat’snext?Canyoutellthedevelopmentofcomputers?robot高速超导计算机激光计算机分子计算机量子计算机DNA计算机神经元计算机生物计算机未来高性能计算机Whatdoyouthinkwillbethenextdevelopment?Doyouknowinwhatwayscomputersareusedtoday?Workoutalistandcompareitwithyourpartner.searchfor…seemovieslistentomusicreadbooksandmagazinessendemailstofriendsdownloadmusicandfilmsbuythingsonlineplaygamesonthecomputerdrawpictureslookatphotographsonthecomputeruseacomputerforschoolworktakepartinchatgroupsBesidescomputer,whatelsecanwegetinformationfrom?HavethecomputerandInternetbecomepartofyourlife?DiscussionHomework1.Writeapassagetotalkaboutthefunctionsofacomputerorarobotinabout80words.2.PreviewtheReading:WHOAMI?
