高中英语 Unit3 computers period1课件 新人教版必修2 课件VIP免费

Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydon’tlikemenow.DoyouknowwhoIam?abacusRiddles(谜语)Iamverybig.Scientistsusemetosolvesomemathematicalproblems.hugecomputerDoyouknowwhoIam?Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?calculatorIcanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseI’msmallenoughforyoutotakemewithyou.DoyouknowwhoIam?laptopPDAPersonalDigitalAssistantIamsosmallinsizethatIcanfitinyourhand.Iusuallyhaveasmallscreenusuallybiggerthanadigitalphone,howeversmallerthanthesmallestlaptop,I’magreatwaytostoretelephonenumbers,accesstheinternet,makecalculations,andsoon.DoyouknowwhoIam?robotI’mamachinethatworksautomatically.Icandoawidevarietyoftasks,especiallysuitablefordoingjobstooboring,difficult,ordangerousforhumanbeings.DoyouknowwhoIam?PCPersonalComputerI’masmall,relativelyinexpensivecomputerdesignedforanindividualuser.I’mbasedonthemicroprocessortechnology.Athome,peopleusemetosurftheInternetandplaygames.DoyouknowwhoIam?PDAabacuscalculatorhugecomputerPClaptopWhat’snext?Canyoutellthedevelopmentofcomputers?robotworkforusinMars(火星)What’snext?carrythingsworkinwars(战斗)仿真机器人entertainment娱乐Whatdoyouthinkwillbethenextdevelopment?Doyouknowinwhatwayscomputersareusedtoday?Workoutalistandcompareitwithyourpartner.searchfor…watchmovieslistentomusicreadbooksandmagazinessendemailstofriendsdownloadmusicandfilmsshoppingonlineplaygamesonthecomputerdrawpicturestakepartinchatgroupsPartsofcomputerskeyboardmousemodemscannerprinterspeaker移动硬盘USBFlashdisc1TB固态硬盘Harddisc:WhatisitinEnglish??Mainboard(主板)WhatisitinEnglish??CPU(centralprocessingUnit)中央处理器WhatisitinEnglish??RAM(随机存储器)(RandomAccessMemory)WhatisitinEnglish??Keyboard(键盘)WhatisitinEnglish??Powersupply(电源)DVDROMDigitalVersatileDiscReadOnlyMemory数字通用光盘