Definition Reciting

《Definition Reciting》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、DefinitionRecitingOperatingsystem操作系统:thesetofprogramthatjointlycontrolthesystemresourcesonacomputer.graphicalinterface图形界面:astyleofinteractionbetweentheuserandthecomputerinvolvingagraphicsscreen,icons,andsomeformofpointingdevicesuchasamouse.command-based指令装置:acomputersystemwhichin

2、teractswiththeuserbycommandsenteredatapromptonthescreen.ControlUnit控制单元:thepartoftheprocessorwhichcontroldatatransfersbetweenthevariousinputandoutputdevicesiscalledtheControlUnit.CPU:centralprocessingunit.Registers:agroupofdevicestheareusedtostoreinformationwithinacomputerforhigh-s

3、peedaccess.Systemclock:USB:UniversalSerialBus.accumulator:aregisterthatholdstheresultsofoperationsperformedbythearithmeticportionoftheCPU.General-purposecomputer通用计算机:Acomputerthatcanperformanycomputationaltaskforwhichsoftwareisavailable.Apcisageneral-purposecomputer.PortableComput

4、ers便携式计算机:Anycomputerdesignedtobemovedeasily.PortableComputerscanbecharacterizedbysizeandweight.laptop膝上型计算机:Asmall,portablecomputerthatrunsoneitherbatteriesorACpower.Itcanbeheldonthelap;usuallyhasafloppydrive;usesflatLCDorplasmascreen.PDA个人数字助理:AcronymforPersonalDigitalAssistant.p

5、ixel象素:anindividualdotonacomputerscreen.Thecomputercontrolsthecolourandbrightnessofeachpixel.template摸板:apre-shapedpatternusedasaguide.Spooling假脱机:awayofstoringdatatemporarilyondiskuntilitcanbeprocessedbyanotherpartofthesystem.Process进程:Aprogramorapartofaprogram;acoherentsequenceof

6、stepsundertakenbyaprogram.time-shared:Biometriccontrol:onlineservice在线服务:apublicdatabaseorbulletinboardwhichcanbeaccessedoveracomputerortelephonenetwork.Download下载:sendprogramsordatafromacentralcomputertoaremoteterminalorPC.bulletinboard(电子)公告牌:ateleconferencingsystemthatallowsuser

7、toreadmessagesleftbyprevioususersonavarietyoftopics.Alluserscanseeallmessages,unlikee-mailwherethemessageisprivate.Modem调制解调器:modulatoranddemodulator:adevicethatconvertsthedigitalbitstreamusedbythecomputerintoananalogsignalsuitablefortransmissionoveratelephoneline(modulation),andth

8、enconvertsitbacktodigital(