autolisp 英文资料

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1、AutoLISPtoVisualLISP:DesignSolutionsforAutoCADInstructor’sGuideChapterOneDefinitionsSyntax-Thewaycommandsarearrangedinsideacomputerprogram.SourceCode-IsanASCIItextfilecontainingaformalprogramminglanguage.Thesourcecodefilemustbecompiled,interpretedorassembledbe

2、foreacomputercanuseit.Flowchart-incorporatestheuseofgraphicsymbolstodescribeasequenceofoperationsorevents.Theyareusedtodescribeeverythingfromtheprocessinvolvedinthetreatingofwastewatertothesequenceofoperationsforamicroprocessor.Pseudo-Code-Amorenaturalwayofpre

3、paringthesourcecodeforacomputerprogramiswithpseudo-code.Inthismethod,standardEnglishtermsareusedtodescribewhattheprogramisdoing.Thedescriptionsarearrangedinthelogicalorderthattheyappear.GUI-AGraphicalUserInterfaceallowstheusertointeractwithacomputerbyselecting

4、iconsandpicturesthatrepresentprograms,commands,datafiles,andevenhardware.ProgrammingLanguage-Theactualcommandsusedtoconstructacomputerprogram.MachineLanguage–Aprogramthatiscodedsothatacomputercandirectlyusetheinstructioncontainwithintheprogramwithoutanyfurther

5、translation.Hardware-isdefinedasthephysicalattributesofacomputer,forexample,themonitor,keyboard,centralprocessingunit.Software-isdefinedastheprogramsorelectronicinstructionsthatarenecessarytooperateacomputer.Binary-Anumbersystemthatconsistoftwonumbersoneandzer

6、o.Itisusedextensivelywithcomputersbecauseofitseaseofimplementationusingdigitalelectronics.AnswerstoReviewQuestions2.Thisprocessallowstheprogrammertogatherthenecessaryinformationusedtoconstructtheapplication.Italsoallowstheprogramtostartlayingouttheactualprogra

7、mbeforethesourcecodeiscreated.Thusallowingtheprogrammertoensurethequalityandaccuracyaprogram.3.StatetheproblemListunknownvariablesListwhatisgivenCreatediagramsListallformulasListassumptionsPerformallnecessarycalculationsCheckanswer4.Flowchartsusegraphicsymbols

8、torepresentasequenceoroperationinacomputerprogram,whereaspseudocodeusesstandardEnglishtermstodescribewhattheprogramisdoing.FlowChartPsuedo-CodeStartProgramPromptuserforInformationP