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1、计算机专业英语Lesson3HardwareWordsandExpressionsNotesReadingComprehension译文Lesson3Hardware补充阅读Hardwareisawordtodescribecomputerdevices.Itreferstotheactualmachinerythatmakesupcomputersystem—theCPU,inputdevices,outputdevicesandstoragedevices.Somepartscanbeseen,andsomepa
2、rtscannotbeseenfromtheoutside.Withacomputer,hardwareisthephysicalpart—thestuffyoucantouch,feelinyourhand.Lesson3HardwareHardwareperformsfourmajorfunctionswhichareinput,processing,outputandstorage.InputdevicesofacomputerusuallyusuallyKeyboard,mouse,modemandscann
3、erwhichprovideawayofcommunicatingwithacomputer.Theytranslatedatathatwecanunderstandintoaformthatacomputercanprocess.Lesson3HardwareTheprocessorwhichisoftencalledCPU(CentralProcessingUnit，中央处理器)isthemainchipinacomputerandisalsothemostimportantpartofacomputer.Itc
4、anbedescribedasthe“brain”ofacomputer.Itprocessesinstructionsandmanagestheflowofinformationthroughacomputersystem.Actually,itisquitesmallinsize.Thispartisputinsidethemainframe.Lesson3HardwareThefirstcomputerinthehistorywasnamedENIAC(ElectronicNumericalIntegrator
5、andComputer)in1946.Itwasquitehugeandexpensive.Ordinarypeoplecannotaffordit.Lateron,sincethecontributionofhumanbeing’sintelligence,computersarebecomingsmallerandlessexpensive.Evenordinarypeoplelikeyouandmecanaffordittoday.Lesson3HardwareNomatterhowpowerfulCPUis,
6、peoplecannevergettheinformationtheywantwithoutanoutputdevicebecausethedataacomputerprocessescannotbeunderstoodbyhumanbeings.Outputdevicescantranslatethedataintotheinformationwecanunderstand.Theyenableacomputertocommunicatewithus.Theoutstandingoutputdeviceisamon
7、itorwhichcanbefoundineverycomputer.Anotherordinaryoutputdeviceisaprinter.Lesson3HardwareLesson3HardwareBesidesthefunctionsofinput,processingandoutput,acomputeralsohasanotherexcellentfunction—storage.Thestoragedevicesholdinformationanddatawhenthecomputerisnotusi
8、ngthem.Thereareseveralkindsofstoragedevices:aharddiskdrive,floppydisks,andCD-ROMs.WordsandExpressionsWordsandExpressions1.Itreferstotheactualmachinerythatmakeupcomputersyste
