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1、2019-2020年高中英语必修二Unit3puters教案1IntroductionInthisperiod,afterthewarmingup,studentswillfirstbeguidedtoimagineandsharetheirviewsaboutthetechnology.TheywillthenbehelpedtoreadanarrationentitledWHOAMI.Examplesof“WarmingUp”designsarepresentedinthisbookforteachers’reference.puterandoverheadpro
2、jectormaybeusedtoaidtheteachingandlearning.ObjectivesTotalkaboutputerToreadaboutputerFocusWordssimplify,sum,operator,logically,solve,reality,personal,network,finance,applications,exploreExpressionstechnologicalrevolution,artificialintelligence,asaresult,anyhowPatternsFromthenon,Igrewrap
3、idlybothinsizeandinbrainpower.AsaresultItotallychangedmyshape.Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold!AidsMultimediafacilities,tape-recorder,photos,diagramsProceduresI.Warmingup1.WarmingupbytalkingaboutputerLookatthepicturesonpage17.Whatar
4、ethey?Whatdotheyhaveinmon?Yes,theyareputers.Thenwhatisaputer?Aputerisamachinewhichstoresknowledgeinitsmemoryanddoescalculationsonthatknowledge.Thisknowledgeisstoredinsymbols;itiscalleddata.Aputerusuallyhasamonitortoshowresults.However,someputerscanspeak;theseputerscanbeusedforvoicemail.
5、计算机室Aputerfrequentlyrequiresabootdevice.Thebootdevicecontainstheputer’soperatingsystemanddata.puterprogramscanbeinstalledontoaputer.SomepeoplethinkthatputersarelessusefuliftheydonothaveaccesstotheInternet.TheythinkthisbecausetheInternetallowstheputerstosendandreceivedataandemailacrossth
6、eworld.曙光3000巨型计算机Aputerisnowalmostalwaysanelectronicdevice.Itusuallycontainsmaterialswhicharetoxic;thesematerialswillbeetoxicwastewhendisposedof.Whenanewputerispurchasedinsomeplaces,lawsrequirethatthecostofitswastemanagementmustalsobepaidfor.Thisiscalledproductstewardship.Insomecountri
7、esoldputersarerecycled(melteddown)togetgoldandothermetals.Thisisdangerous,becausethisprocedurereleasesthetoxicwasteintothewaterandsoil.putersbeeobsoletequickly.Veryoftentheyaregivenawayandnewonesreplacethemwithintwoorthreeyears.Thismakestheproblemworse.puterrecyclingisthusmon.M
