中职计算机专业英语03 教学课件 Lesson 9　Programming Language.ppt

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1、计算机专业英语Lesson9ProgrammingLanguageWordsandExpressionsNotesReadingComprehension译文Lesson9ProgrammingLanguage补充阅读学习重点Lesson9ProgrammingLanguageAlthoughcomputersareintelligenttoworkefficientlyforhumanbeings,theycannotunderstandanyordinaryhumanlanguagessuchasChineseandEnglish.尽管计算机能智力地有效率地完成人们的任务，它们却看不懂如中

2、文或英文这样的普通人类语言。Althoughcomputersareintelligenttoworkefficientlyforhumanbeings,theycannotunderstandanyordinaryhumanlanguagessuchasChineseandEnglish.Theycanonlyunderstandthelanguagewhichiswritteninbinarycodes.Lesson9ProgrammingLanguageAprogramminglanguageismadeupofstringsof1sand0s(binarycodes)andistheo

3、nlylanguagetheCPUcandirectlyunderstand.Thislanguageisalsoknownasmachinecodes.Aprogramminglanguageissymbols,characters,andusageofrulestopermitpeopletocommunicatewithcomputers.Lesson9ProgrammingLanguageUnfortunately,itisverydifficulttowritemachinecodesforordinarypeople.Onlyprofessionalprogrammerscanwr

4、iteoutthesequencesofbinarycodestotransfertheinstructionstocomputers.Therefore,weusesymboliclanguageswhichareeasiertounderstand.Aspecialprogramisrequiredtotranslatesymboliclanguagesintomachinecodes.Thisspecialprogramiscalledanassembler.Lesson9ProgrammingLanguageAtthebeginningofthedevelopmentofprogram

5、minglanguage,thebasiclanguageswhichareseemedaslow-levellanguagesweresimilartothemachinecodes.Thatistosay,theywerestilltoodifficultforhumanbeingstounderstand.Thus,theyweredifficulttowrite.Expertshavebeenmakingeffortstosimplifytheprogramminglanguageandovercomethedifficultyofcommunicationbetweenhumanbe

6、ingsandcomputers.Lesson9ProgrammingLanguageThen,higher-levellanguagesarecreatedwhicharemoreandmoreunderstandableforhumanbeings.MaybewecanusehumanlanguagessuchasChineseandEnglishtowritetheinstructionstocomputersinthenearfuture.Lesson9ProgrammingLanguageWordsandExpressions1.Althoughcomputersareintelli

7、genttoworkefficientlyforhumanbeings,theycannotunderstandanyordinaryhumanlanguagessuchasChineseandEnglish.尽管计算机能智力地有效率地完成人们的任务，它们却看不懂如中文或英文这样的普通人类语言。although表示的意思是“尽管”，表示转折。although与though都作“虽然”解，都不能与b