计算机英语(第二版)chapter1 Computer System Overview课件.ppt

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1、ComputerScienceinEnglishDesignedandProgrammedByJiangTongqiangMiaoTianshunTeachingAssistedCoursewareComputerScienceinEnglishII.GrammaticalNotestotheTextIII.WordsBanktotheTextIV.ExercisesoftheChapterI.Pre-readingQuestionsChapter1:ComputerSystemOverviewII.GrammaticalNotestotheTextIII.WordsBanktotheText

2、IV.ExercisesoftheChapterI.Pre-readingQuestionsChapter1I.Pre-readingQuestions1.Whatisadigitalcomputer?2.Arethereanydifferencesbetweenthebinarynumbersystemandthecommondecimalnumbersystem?3.Howmanytypesofcomputersdoyouknow?Nameatleastfourofthem.1.Whatisadigitalcomputer?ReferenceKey:Thedigitalcomputeris

3、adigitalsystemthatperformsvariouscomputationaltasks.Theword“digital”impliesthattheinformationinthecomputerisrepresentedbyvariablesthattakealimitednumberofdiscretevalues.Thesevaluesareprocessedinternallybycomponentsthatcanmaintainalimitednumberofdiscretestates.Digitalcomputerisalsocalledelectroniccom

4、puterorcomputer.Chapter1I.Pre-readingQuestions1.Whatisadigitalcomputer?2.Arethereanydifferencesbetweenthebinarynumbersystemandthecommondecimalnumbersystem?3.Howmanytypesofcomputersdoyouknow?Nameatleastfourofthem.2.Arethereanydifferencesbetweenthebinarynumbersystemandthecommondecimalnumbersystem?Refe

5、renceKey:Thedecimaldigitshastendigits:0,1,2,…,and9.Thebinarynumbersystemhastwodigits:0and1.Thebinarynumbersuseabase2.Thedecimaldigitsuseabase10.Chapter1I.Pre-readingQuestions1.Whatisadigitalcomputer?2.Arethereanydifferencesbetweenthebinarynumbersystemandthecommondecimalnumbersystem?3.Howmanytypesofc

6、omputersdoyouknow?Nameatleastfourofthem.3.Howmanytypesofcomputersdoyouknow?Nameatleastfourofthem.ReferenceKey:Computersareusuallyclassifiedintofourbroadcategories:microcomputers,minicomputers,mainframecomputersandsupercomputers.it在句中作形式主语，没有具体意义，只是帮助把句子真正的主语不定式tofindafieldinwhichcomputersarenotbeing

7、used移到句子后部去，避免句子显得头重脚轻。除不定式外，动名词、从句作主语时也可以同样用it作形式主语。不定式结构中包含一个由介词in加which引导的限制性定语从句，修饰field。1.It’shardtofindafieldinwhichcomputersarenotbeingused.II.GrammaticalNotestotheTextdigital是主语theword的同位语，起解释