中职计算机专业英语03 教学课件 Lesson 6　Operating System.ppt

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1、计算机专业英语Lesson6OperatingSystemWordsandExpressionsNotesReadingComprehension译文Lesson6OperatingSystem补充阅读学习重点Lesson6OperatingSystemAnoperatingsystemisanessentialpartofacomputerwhichperformsthreemajorfunctions:managingresources,providingauserinterface,andrunningapplication.It

2、managesandcontrolstheactivitiesofthecomputer.操作系统是计算机的重要部分，它有三大功能：管理资源，提供用户界面，运行程序。它管理并控制计算机的运行。Anoperatingsystemisanessentialpartofacomputerwhichperformsthreemajorfunctions:managingresources,providingauserinterface,andrunningapplication.Itmanagesandcontrolstheactivities

3、ofthecomputer.Lesson6OperatingSystemTheprimarypurposeofanOS(OperatingSystem)istosupportapplicationprograms.Theseprogramsloadandrunapplicationprogramssuchaswordprocessorsandspreadsheets.ThesecondfunctionofanOSistoprovideauserinterfacewhichusersinteractwithapplicationprogr

4、amsandcomputerhardware.Almostalloperatingsystemstodayprovideawindowslikegraphicaluserinterface.AnothermajorfunctionofOSisallocatingsystemresources.AcomputercanperformthousandsofworkatthesametimeowingtotheOS.TheOSdecideswhentoallocatethem.Itisimpossibleforaprogramtoworkon

5、adevicewhichisunavailable.Therefore,itisoperatingsystemtomanagetheuseofaspecificdevice.Lesson6OperatingSystemOperatingsystemshavedevelopedoverseveraldecadesformainlytworeasons.First,theyallowcomputeruserstodevelopandexecuteprogramsinaconvenientenvironment.Secondly,operat

6、ingsystemsdoalotoffavortoensureagoodperformanceofthecomputingsystem.Theycanallocatethousandsofworkscientifically.Withoperatingsystems,acomputercanperformvariousjobsatatimebothefficientlyandeffectively.Lesson6OperatingSystemSomemicrocomputershaveanoperatingsystemstoredper

7、manentlyinafixedmemoryknownasROM.Inotherwords,operatingsystemisthespecializedsoftwarethatcontrolsthemanagementandusageofhardwareresourcessuchaskeyboard,mouse,printer,monitor,storagedevices,andmemory.Italsosupportsothersoftwaresuchasapplicationsoftwaretoworkonthecomputer.

8、Lesson6OperatingSystemWordsandExpressionsWordsandExpressions1．AnothermajorfunctionofOSisallocatingsyste