Unit3-Computers-课件

unit3ComputersComputershavebroughtgreatchangestoourlife.Canyoulivewithoutcomputers?keyboardmousemonitorscreenspeakerhostcomputerWhatEnglishwordsdoyouknowaboutcomputers?CPU•DVD-ROM•Chips•Modem•Harddrive•Floppydisc•Network•Virus•Download•Upload•Program•Website•Hacker•crash•Homepage•Password•Desktop•Username•Click•Icon•Software•Hardware网络病毒下载上传程序站点黑客主页密码桌面用户名点击软件硬件死机图标LookatthefollowingpicturesandsaytheirEnglishnames.abacuscalculatorhugecomputerPClaptopPDArobotWhat’snext?What’snext?Canyouputtheminanorderaccordingtothetimewhentheyappeared?【1】【2】【3】【4】【5】【6】【7】Doyouknowinwhatwayscomputersareusedtoday?Workoutalistandcompareitwithyourpartner.searchforinformationseemoviesshoponlineplaygamesontheinternetchatwithfriendsdownloadmusicandfilmslistentomusicreadbooksandmagazinessuperconductinghigh-speedcomputer高速超导计算机lasercomputer激光计算机molecularcomputer分子计算机quantumcomputer量子计算机DNAcomputerneuralcomputer神经元计算机biologicalcomputer生物计算机Whatdoyouthinkwillbethenextdevelopment?HighperformancecomputerinthefuturecomputerComputerisaprogrammableelectronicdevicethatcanstore,retrieve,andprocessdata.Doyouknowthehistoryofcomputer?Let’sreadaboutit.Readthewholepassageasfastasyoucan.Trytogetthemainideaofthispassage.Findoutthetopicsentenceofeachparagraphandunderlinethem.skimmingThetopicsentenceofeachparagraph.skimmingPara1Para2Para3OvertimeIhavebeenchangedalot.Thosechangesonlybecamepossibleasmemoryimproved.Since1970smanynewapplicationshavebeenfoundoutforme.Inthepassage,“I”refersto_________.acomputerChoosethemainideaofthispassage.skimmingA.Thecomputerwantstofind“whoheis”.B.Thefunction(功能)ofthecomputer.C.Thecomputerbecomespopulararoundtheworld.D.Thehistoryandtheapplicationsofthecomputer.查尔斯･巴贝奇Paragraph1Paragraph2Paragraph3TopicsentenceSupportingdetailsOvertimeIhavebeenchangedquitealot.•Calculatingmachine•Analyticalmachine•Universalmachine•PC•laptopThesechangesonlybecamepossibleasmymemoryimproved•Tubes•Transistors•Chips•Network•WorldwidewebSincethe1970smanynewapplicationshavebeenfoundforme.•Communications•Finance•Trade•Robots•Mobilephones•Medicaloperations•Spacerockets•Providingalifeof•highqualityScanning:Para1Fillinthechartwiththeinformationinpara1.TimeMachineApplicationsIn1642A________machine________difficultsumsAboutin_____AnanalyticalmachineThink_________In1936A________machineSolveanydifficultproblemBythe1940sAlargermachine______worriedthedesigners____________PersonalcomputerLaptop______________________________1822calculatingSimplifylogicallyuniversalUsedinofficesandhomesSincethe1970sItwasconsideredatechnologicalrevolutionandthestartoftheartificialintelligence.Ihavechangedalortfromacalculatingmachinetoananalyticalmachine.Icandomanythingsashumanrace.Reality3.Inwhatwayshavecomputerbeenchanged?FurtherUnderstandingsizeshapespeedbrainpower/memoryapplicationrelationshipwithhumanracesmall→large→smallerfasterandfastermoreandmoredevelopedusedinmoreandmorefieldscloserandcloserChangesofthemachine.CalculatingmachineAnalyticalmachineUniversalmachineMachinewithartificialintelligenceMachinewithnewtransistorAfamilyconnectedbyanetworkAfamilyusedbytheInternet1.___________2.___________3.___________4.___________5.___________6.___________7.___________8.___________9.___________10.__________completechangeinwaysofthinking,working,etc.connectedcomputersystemtomakethingseasiertofindtheanswerusingnumberscanbemovedeasilyfromplacetoplacetoworkouttheanswertoaproblemtotravelaroundanareatofindoutaboutitcompletelyanywayactivityofmanagingmoneyfinanceanyhowtotallyexploresolvemobilecalculatesimplifyrevolutionnetworkFindthewordorexpressionsfroeachofthefollowingmeaningsfromthetext.Completethepassagewiththewordsbelow.Mybrotherwasveryinterestedincomputersandenjoyedwritingprogramsofhisown.HeusedtodownloadinformationfromtheInternetandmadegooduseofit.Helikedto________theWorldWide_______andusedtheInternettocommunicatewithcomputerprogrammersallovertheworld.Whenhewenttouniversity,hestudiedIT(information____________)anddevelopedaspecialinterestin__________intelligence.Afterdevelopingspecial___________ofthecomputer,hehopestodesignan__________robotwhichcanthink_________andlooklikeahumanbeing,butin_______hehasalongwaytogo.exploreWebtechnologyartificialapplicationsintelligentlogicallyreality