高中英语_Book2_Unit_3_第三单元_reading_新人课件教版必修2

Whatarethey?First,let’splayagame!PC(personalcomputer)laptop(notebookcomputer)PDA(personaldigitalassistant)robotSimilarity?They’recomputersindifferentstages.What’snext?i-robot(intelligentrobot)WHOAMI?Unit3Computers——ReadingUnit3Computers——readingJusthaveafastreadingFindouttopicsentencesofeachparagraph.1.OvertimeIhavechangedquitealot.2.Thesechangesonlybecamepossibleasmymemoryimproved.3.Sincethe1970smanynewapplicationshavebeenfoundforme.Let’shaveamoredetailedreading!ReadPara.1in2minsandfindoutthedevelopmenthistotyofcomputers.I’llgiveyousomeclues.1936(1822)16421940sLatterAndlatter…acalculatingmachine,in1642ananalyticalmachine,(in1822),CharlesBabbageauniversalmachine,in1936,AlanTuringahugecomputer,aslargeasaroom,in1940sapersonalcomputerandalaptop,andusedinofficesandhomessincethe1970s…ananalyticalmachine,(in1822)分析机是由英国数学家查尔斯·巴贝奇设计的一种机械式通用计算机。它的设计逻辑却非常的先进，是大约100年后电子通用计算机的先驱。ahugecomputer,aslargeasaroom,inthe1940s尺寸（英尺）30×50电容(个)10000重量（吨）30开关(个)6000真空管(个)18800耗电（W）150000电阻(个)70000成本（1940年）$40万ENIACPara.2technicalwords•Memory:storageorstoragecapacityasofacomputer,disk,etc.chiptransistortubenetworkTheWorldWideWebThesechangesonlybecamepossibleasmymemoryimproved.•tubes•transistors•smallchips•network•WorldWideWebmoreandmorepowerful!Para.2Para.3Findsomesupportingdetailsforthetopicsentence.1minute.Sincethe1970smanynewapplicationshavebeenfoundforme.Sincethe1970smanynewapplicationshavebeenfoundforme.•communications•finance•trade•robots•mobilephones•medicaloperations•spacerockets•exploringtheMoonandMarsAnyhow,mygoalistoprovidehumanswithalifeofgoodquality.Name:computerBorn:(time)_______(place)__________Myrealfather:_______________Mysize:1._______________(inthepast)2.____________________(modern)Myhistory:1.1642___________machine2.1822__________machine3.1936__________machine4.1940s______________5.1970s_______and______Mymemory:________________________Myapplications:_______________;________;_______________;________;_______________;______________;_______________...1642FranceAlanTuringhugesmallerandsmalleranalyticalcalculatinguniversallaptopPCtubestransistorschipscommunicationfinancerobotmobilephonespacerocketmedicaloperationtradehugecomputerHowdoweusecomputersindailylife?ComputersBECDAcommunicationentertainmentinformationworkandjobcommerce/financeonlinecommunication–chatting–sendingE-mails–expressingideasonline–makingnewfriends–…entertainment–playinggames–watchingmovies–listeningtomusic–…information–readingnews–searchingforusefulinformation,suchaspriceinformation,jobinformationandsoon–askingquestionsandseekingforhelp–…commerce/financeonline–shoppingonline–transferringaccounts–payingallkindsofbills,suchaswater&electricityfees,cellphonefeesandsoon–speculatinginstocksonline–…workandjob–usingcomputerstodojobs–applyingforjobsonline–doingresearch–…