搜索
天津工程师范学院2007届本科生毕业设计1英文资料及中文翻译DevelopmentandapplicationofEDAtechnologyEDA(ElectronicsDesignAutomation)technologyisthatonekindarisingatthehistoricmomentwiththedevelopmentatfullspeedoftheintegratedcircuitandcomputertechnologyisadvanced,fast,effectiveelectronicdesignautomationtool.EDAtoolregardshardwareandsoftwareofthecomputerasthebasicworkbench,softwarepackageincommonuseofCADthatcollectthedatabase,figurelearning,picturetheoryandtopologicallogic,computationalmathematics,optimizetheory,etc.multi-disciplinarylatestachievementanddevelops.EDAisadevelopmenttrendoftheelectronicdesigningtechnique,utilizeEDAtooltoreplaceadesignerandfinishmostworkintheelectronicsystemdesign.Theimplementationmethodofthedigitalsystemhasbeengonethroughfromdiscretecomponent,SSI,MSIevolutionatfullspeedtoLSI,VLSIandUVISItoo.Inordertoimprovesystematicdependabilityandcommonability,themicroprocessorandspecial-purposeintegratedcircuit(ASIC)havereplacedthewholehardwareLSIcircuitincommonusegradually.Canprogramthelogicdevice(PLD),especiallycanbeprogrammedinthemakingthatthelogicdevice(FPLD)isappliedtoASICinalargeamountatthescene.Inthecourseofcanningprogramthedevelopmentoftheintegratedcircuit,theappearanceofEDAtechnologyhasbroughttherevolutionarychangethattheelectronicsystemisdesigned.Withtheconstantdevelopmentofthemicro-electrictechniqueandcomputertechnology，inthedesignworkofelectronicsystemrelatedtofields,suchascommunication,nationaldefense,spaceflight,industrialautomation,instrumentandapparatus,etc，thecontentofEDAtechnologyisrisingatthesurprisingspeed,ithasalreadynowadaysbecomeoneofthefrontoftheelectronictechnicaldevelopment.ThistexthasexplainedthebasicconceptionandevolutionofEDAtechnologyatfirst,thenintroducetheessentialfeatureofESDAfromseveraldifferentrespects,AnalysetheworkflowontwodifferentlevelsofEDAtechnologyemphaticallyfinally,namelyonegradeofdesignsofcircuitandsystemgradearedesigned，haveintroducedakindoftop-downhighlevelelectronicdesignmethod.1．PrefaceThehumansocietyhasalreadyenteredintothehighlydevelopedinformation-based天津工程师范学院2007届本科生毕业设计2society,thedevelopmentoftheinformation-intensivesocietycannotdowithouttheprogressoftheelectronicproduct.Themodernelectronicproducthasbeenpresentingthedownwardtrendallthetimeatbutthepricewhileperformanceimproves,complexityincreases,andthepacesofthemodelchangearequickerandquicker,themainreasonwhichrealizesthiskindofprogressisthedevelopmentwhichproducesthemanufacturingtechnologyandelectronicdesigningtechnique.Theformerregardsverysmallprocesstechnologyasrepresentatives,hasalreadydevelopedthedeepsub-microatpresent,canintegrateseveraltenmilliontransistorsonthechipofseveralsquarecentimeter;Thelatter'scoreisEDAtechnology.EDAreferstoregardingcomputerastheworkbench,havemergedelectronicCADsoftwarepackageincommonusethatthelatestachievementofapplicationelectrictechnology,computertechnology,intelligenttechnologydevelopsinto,cancarryonthedesignworkofthreerespectsauxiliarymainly:ICdesigns,electroniccircuitdesignandPCBaredesigned.WithoutthesupportofEDAtechnology,itisunimaginablethatthedesignthatwantstofinishabove-mentionedverylargescaleintegrationismade,conversely,producemanufacturingtechnologyconstanttoprogressandwillputforwardnewrequesttoEDAtechnology.2．DevelopmentofEDAtechnologyEDAtechnologyisfollowingthedevelopmentthatthecomputer,integratedcircuit,electronicsystemaredesigned,havegonethroughCAD(ComputerAssistDesign),auxiliaryengineeringdesignCAEofcomputer(ComputerAssistEngineeringDesign)ThreedevelopingstageswithdesignautomationESDAofelectronicsystem(ElectronicSystemDesignAutomation).Reviewthedevelopmentcourseofelectronicdesigningtechniqueinthepast30years,candivideEDAtechnologyintothreestages.Theseventiesofthe20thcentury,withhittingtheappearanceandapplicationofthesmall-scaleintegratedcircuit,traditionalmaddingmapsbyhandanddesignedtheprintedcircuitboardandintegratedcircuitmethodhasbeenalreadyunabletomeetanddesigntherequestsoftheprecisionandefficiency,peoplebeginhighrepeatedmiscellaneousworkconnectupandworkandeditandreplacewithCADtoolthatanalyzesuchasBututwithtwo-dimensionallevelfigureproductsdesignprocess.ThishasproducedthefirstgenerationofEDAtools.Limitedbycomputerworkbenchatthattime,thedesignworkthatcanbesupportedislimitedandperformanceisworseTheseventieswereCADstage,peoplebegantocarryonthedomaineditorofICandPCBoverallarrangementtoconnectupauxiliarywiththecomputerthisstage,itisdone天津工程师范学院2007届本科生毕业设计3byhandtoreplace,hasproducedtheconceptofCAD.Thefirstindividualcomputerplatformofworkstation(Apollo)thatappearedintheeighties,haspromotedtherapiddevelopmentofEDAtool.Formeettheelectronicproductinthescaleandmaketheneedthathave,thesecondgenerationofEDAtechnologytakingemulationofthecomputerandselfroutingaskeytechnologyhasappeared.CAEtoolwithautomaticintegrationcapabilityhasreplacedsomedesignworkofthedesigner's.Characteristicitstoregardsoftwaretoolascorefinishdesign,analyze,produce,everyjoboftestingetc.ofproductdevelopmentthroughsoftwarethe.However,EDAtoolthatthemajorityproceedsfromprinciplepicturestillcan'tmeettherequesttha