电器电子专业英文翻译Word文档下载推荐.docx
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电器电子专业英文翻译Word文档下载推荐.docx
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电器电子专业英文翻译@#@Preface@#@Duringtheearlyyearsofmicroprocessors,therewerefewengineerswitheducationandexperienceintheapplicationsofmicroprocessortechnology.Nowthatmicroprocessorsandmicrocontrollershavebecomepervasiveinsomanydevices,theabilitytousethemhasbecomealmostarequirementformanytechnicalpeople.@#@Todaythemicroprocessorandthemicrocontrollerhavebecometwoofthemostpowerfultoolsavailabletothescientistandengineer.Microcontrollershavebeenembeddedinsomanyproductsthatitiseasytooverlookthefactthattheygreatlyoutnumberpersonalcomputers.MillionsofPCsareshippedeachyear,butbillionsofmicrocontrollersshipannually.Whileagreatdealofattentionisgiventopersonalcomputers,thevastmajorityofnewdesignsareforembeddedapplications.ForeveryPCdesigner,therearethousandsofdesignersusingmicrocontrollersinembeddedapplications.Thenumberofembeddeddesignsisgrowingquickly.Thepurposeofthisbookistogivethereaderthebasicdesignandanalysisskillstodesignreliablemicrocontrollerormicroprocessorbasedsystems.TheemphasisinthisbookisonthepracticalaspectsofinterfacingtheprocessortomemoryandI/Odevices,andthebasicsofinterfacingsuchadevicetotheoutsideworld.@#@Amajorgoalofthisbookistoshowhowtomakedevicesthatareinherentlyreliablebydesign.Whilealotofattentionhasbeengivento“qualityimprove-ment,”themajorityoftheemphasishasbeenplacedontheprocessesthatoccurafterthedesignofaproductiscomplete.Designdeficienciesareasig-nificantproblem,andcanbeexceedinglydifficulttoidentifyinthefield.Thesetypesofqualityproblemscanbeaddressedinthedesignphasewithrelativelylittleeffort,andwithfarlessexpensethanwillbeincurredlaterintheprocess.Unfortunately,therearemanyhardwaredesignersandorganiza-tionsthat,forvariousreasons,donotunderstandthesignificanceandex-penseofanunreliabledesign.Thedesignmethodologypresentedinthistextisintendedtoaddressthisproblem.@#@Learningtodesignanddevelopamicrocontrollersystemwithoutanypracticalhands-onexperienceisabitliketryingtolearntorideabikefromreadingbook.Thus,anothergoalistoprovideapracticalexampleofacompleteworkingproduct.Whatappearseasyonpapermayproveextremelydifficultwithoutsomerealworldexperienceandsomepotentiallypainfulcrashes.@#@Inordertodoitright,it’sbesttoexamineandusearealdesign.Ontheotherhand,thecurrentstateofthetechnology(surfacemountedpackaging,etc.)canmakethepracticalsideproblematic.Inordertoaddressthisproblem,aspecialeducationalSystemDevelopmentKitisavailabletoaccompanythisbook(8031SDK).AllthedocumentationtoconstructanSDKisavailableonthecompanionCD-ROM.Thisinfo,alongwithupdatedinformationandapplicationexamples,isalsoavailableonthewebsiteforthisbook:
@#@AlltheinformationneededtobuildtheSDKisavailablethere,aswellasinformationonhowtoordertheSDKassembled@#@andtested.@#@WhilesearchingforanappropriatetextforoneofthecoursesIteachinembeddedcomputerengineering,Iwasunabletolocateabookthatcoveredthetopicadequately.Anearlierversionofthisbookwaswrittentoaccom-panythatcourseandhassinceevolvedintowhatyouseehere.ThecourseisofferedattheUniversityofCalifornia,SanDiegoExtendedStudies,andistitled“EmbeddedControllerHardwareDesign.”Thesamecoursesmayalsobetakeninanon-lineformatusingtheInternet,andcanbefoundatThegoalsofthecourseandthebookareverymuchthesame:
@#@todescribetherightwaytodesignembeddedsystems.@#@Whilenopriorknowledgeofmicrocontrollersormicroprocessorsisrequired,thereadershouldalreadybefamiliarwithbasicelectronics,logic,andbasiccomputerorganization.Chapteroneisintendedasareviewofthosebasicconcepts.Nextthereisageneraloverviewofmicrocontrollerarchitecture,andaspecificmicrocontrollerchiparchitecture,the8051family,isintroducedanddetailed.The8051waschosenbecauseitcanbeinterfacedtoexternalmemory,hassimpletimingspecs,iswidelyusedandavailablefromanumberofmanufacturers.Theconceptsofworst-casedesignandanalysisaredescribedalongwithtechniquesforhardwareinterfacing.Agoodembeddeddesignrequiresfamiliaritywiththeunderlyingmemorytechnology,includingROM,SRAM,EPROM,FlashEPROM,EEPROMstoragemechanismsanddevices.Theprocessorbusinterfaceisthencoveredingeneralform,alongwithanintroductiontothe8051’sbusinterface.Mostembeddeddesignscanalsobenefitfromtheuseofuserprogrammablelogicdevices(PLD).Thissubjectistoocomplexforin-depthcoveragehere,soPLDtechnologyiscoveredfromarelativelyhighlevel.Thecentralthemeofdesigninganembeddedsystem
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