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本教程适用初学者快速掌握SystemVIew工具，包含以下几章:第1章SystemView的功能与使用简介1.1SystemView简介1.2SystemView的用户环境1.2.1设计窗口1.2.2图标库1.2.3图标定义1.3系统定时1.4基本使用1.4.1基本系统的搭建1.4.2分析窗口1.4.3接收计算器1.4.4全局参数连接1.4.5可变参数设计1.4.6与外部文件的接1.4.7动态探针功能1.4.8自动程序生成(APG)功能第2章用SystemView实现滤波器设计2.1各种类型的滤波器设计2.1.1FIR滤波器设计2.1.2Analog模拟滤波器设计2.1.3Communication通信滤波器设计2.1.4用户自定义型滤波器的设计2.1.5直接输入系数设计2.2下载到硬件级第3章SystemView的图标库3.1基本库3.1.1信号源库3.1.2子系统库3.1.3加法器图标3.1.4子系统I/O图标3.1.5算子库3.1.6函数库3.1.7乘法器库3.1.8观察窗库3.2专业库3.2.1通信库3.2.2DSP库3.2.333扩展库3.3.1CDMA库3.3.2数字视频广播DVB库3.3.3自适应滤波器库第4章SystemView调用其它工具4.1用户代码库的调用4.2与仿真工具Matlab的接口

DifferentialEquationsandLinearAlgebra(4th)英文无水印原版pdf第4版pdf所有页面使用FoxitReader、PDF-XChangeViewer、SumatraPDF和Firefox测试都可以打开本资源转载自网络，如有侵权，请联系上传者或csdn删除查看此书详细信息请在美国亚马逊官网搜索此书EditorialDirector,Mathematics:ChristinehoagEditor-in-Chief:DeirdreLynchAcquisitionsEditor:WilliamHoffmaProjectTeamLead:ChristinaleProjectmanager:LaurenMorseEditorialAssistant:JenniferSnyderProgramTeamLead:KarenwernholmProgramManagerDaniellesimbajonCoverandillustrationDesign:StudioMontageProgramDesignLead:BethPaquinProductMarketingManagerClaireKozarProductMarketingCoordiator:BrookesmithFieldMarketingManager:EvanStCyrSeniorAuthorSupport/TechnologySpecialist:JoevetereSeniorProcurementSpecialist:CarolMelvilleInteriorDesign,ProductionManagement,AnswerArt,andCompositioneNergizerAptara,LtdCoverImage:LighttrailsonmodernbuildingbackgroundinShanghai,China-hxdyl/123RFCopyrightO2017,2011,2005PearsonEducation,Inc.oritsaffiliates.AllRightsReserved.PrintedintheUnitedStatesofAmerica.Thispublicationisprotectedbycopyright,andpermissionshouldbeobtainedfromthepublisherpriortoanyprohibitedreproduction,storageinaretrievalsystem,ortransmissioninanyformorbyanymeans,electronic,mechanical,photocopyingrecording,orotherwise.Forinformationregardingpermissions,requestformsandtheappropriatecontactswithinthePearsonEducationGlobalRights&Permissionsdepartmentpleasevisitwww.pearsoned.com/permissions/PEARSONandALWAYSLEARNINGareexclusivetrademarksintheU.s.and/orothercountriesownedbyPearsonEducation,Inc.oritsaffiliatesUnlessotherwiseindicatedherein,anythird-partytrademarksthatmayappearinthisworkarethepropertyoftheirrespectiveowandanyreferencestothird-partytrademarks,logosorothertradedressarefordemonstrativeordescriptivepurposesonly.SuchofsuchmarksoranyrelationshipbetweentheownerandPearsonEducation,Inc.oritsaffiliates,authors,licenseesordistributortreferencesarenotintendedtoimplyanysponsorship,endorsement,authorization,orpromotionofPearsonsproductsbytheownersLibraryofCongressCataloging-in-PublicationDataGoode.StephenwDifferentialequationsandlinearalgebra/StephenW.GoodeandScottA.AnninCaliforniastateUniversity,Fullerton.-4theditionpagescmIncludesindexISBN978-0-321-96467-0—ISBN0-32196467-51.Differentialequations.2.Algebras,Linear.I.Annin,Scott.II.TitleQA371.G6442015515’.35-dc23201400601512345678910V031-1918171615PEARSONISBN10:0-321-96467-5www.pearsonhighered.comISBN13:978-0-321-96467-0ContentsPrefacevii1First-OrderDifferentialEquations1.1DifferentialEquationsEverywhere11.2BasicIdeasandTerminology131.3TheGeometryofFirst-OrderDifferentialEquations231.4SeparableDifferentialEquations341.5SomeSimplePopulationModels451.6First-OrderLinearDifferentialEquations531.7ModelingProblemsUsingFirst-OrderLinearDifferentialEquations61.8Changeofvariables711.9ExactDifferentialEquations821.10Numericalsolutiontofirst-OrderDifferentialEquations931.11SomeHigher-OrderDifferentialEquations1011.12ChapterReview1062MatricesandSystemsofLinearEquations1142.1Matrices:Definitionsandnotation1152.2MatrixAlgebra1222.3TerminologyforSystemsofLinearEquations13824R。
w-EchelonMatricesandElementaryR。
wOperations1462.5Gaussianelimination1562.6TheInverseofasquarematrix1682.7ElementaryMatricesandtheLUFactorization1792.8TheInvertiblematrixtheoremi1882.9ChapterReview1903Determinants1963.1TheDefinitionofthedeterminant1963.2PropertiesofDeterminants2093.3CofactorExpansions2223.4SummaryofDeterminants2353.5ChapterReview242iyContents4VectorSpaces2464.1Vectorsinrn2484.2DefinitionofaVectorSpace2524.3Subspaces2634.4SpanningSets2744.5LinearDependenceandLinearIndependence2844.6Basesanddimension2984.7Changeofbasis3114.8RowSpaceandColumnSpace3194.9TheRank-NullityTheorem3254.10InvertibleMatrixTheoremll3314.11ChapterReview3325InnerProductSpaces3395.1DefinitionofanInnerproductspace3405.2OrthogonalSetsofvectorsandorthogonalProjections3525.3Thegram-Schmidtprocess3625.4LeastSquaresApproximation3665.5ChapterReview3766LinearTransformations3796.1Definitionofalineartransformation3806.2Transformationsofr23916.3TheKernelandrangeofalineartransformation3976.4AdditionalPropertiesofLinearTransformations4076.5Thematrixofalineartransformation4196.6Chaiterreview4287EigenvaluesandEigenvectors4337.1TheEigenvalue/EigenvectorProblem4347.2GeneralResultsforEigenvaluesandEigenvectors4467.3Diagonalization4547.4AnIntroductiontotheMatrixExponentialFunction4627.5OrthogonalDiagonalizationandQuadraticforms4667.6Jordancanonicalforms4757.7Chapterreview4888LinearDifferentialEquationsofOrdern4938.1GeneralTheoryforLinearDifferentialEquations4958.2ConstantCoefficientHomogeneousLinearDifferentialEquations5058.3ThemethodofundeterminedcoefficientsAnnihilators5158.4Complex-ValuedTrialSolutions5268.5OscillationsofaMechanicalSystem529Contentsv8.6RLCCircuits5428.7TheVariationofparametersmethod5478.8ADifferentialEquationwithNonconstantCoefficients5578.9Reductionoforder5688.10ChapterReview5739SystemsofDifferentialEquations5809.1First-OrderLinearSystems5829.2VectorFormulation5889.3GeneralResultsforfirst-OrderLinearDifferentialystems5939.4VectorDifferentialEquations:NondefectiveCoefficientMatrix5999.5VectorDifferentialEquations:DefectiveCoefficientMatrix6089.6Variation-of-ParametersforLinearSystems6209.7SomeApplicationsofLinearSystemsofDifferentialEquations6259.8MatrixExponentialFunctionandSystemsofDifferentialEquations6359.9ThePhasePlaneforLinearAutonomousSystems6439.10NonlinearSystems6559.11ChapterReview66310TheLaplaceTransformandSomeElementaryApplications67010.1DefinitionoftheLaplaceTransform67010.2TheExistenceofthelaplacetransformandtheInversetransform67610.3PeriodicFunctionsandtheLaplacetransform68210.4ThetransformofderivativesandsolutionofInitial-Valueproblems68510.5TheFirstShiftingTheorem69010.6TheUnitStepFunction69510.7TheSecondShiftingTheorem69910.8ImpulsiveDrivingTerms:TheDiracDeltaFunction70610.9TheConvolutionIntegral71110.10ChapterReview71711SeriesSolutionstoLinearDifferentiaEquations72211.1AReviewofpowerseries72311.2SeriesSolutionsaboutanOrdinaryPoint73111.3TheLegendreEquation74111.4SeriesSolutionsaboutaRegularSingularPoint75011.5Frobeniustheory75911.6Bessel'sEquationofOrderp77311.7Chapterreview785ViContentsAReviewofComplexNumbers791BReviewofPartialFractions797CReviewofIntegrationTechniques804DLinearlyIndependentSolutionstox2y+xp(x)y+g(x)y=0811Answerstoodd-NumberedExercises814Index849S.W.GoodededicatesthisbooktomeganandtobiS.A.annindedicatesthisbooktoarthurandJuliannthebestparentsanyonecouldaskforPretraceLikethefirstthreeeditionsofDifferentialEquationsandLinearalgebra,thisfourtheditionisintendedforasophomorelevelcoursethatcoversmaterialinbothdifferentialequationsandlinearalgebra.Inwritingthistextwehaveendeavoredtodevelopthestudentsappreciationforthepowerofthegeneralvectorspaceframeworkinformulatingandsolvinglinearproblems.Thematerialisaccessibletoscienceandengineeringstu-dentswhohavecompletedthreesemestersofcalculusandwhobringthematurityofthatsuccesswiththemtothiscourseThistextiswrittenaswewouldnaturallyteachblendinganabundanceofexamplesandillustrations,butnotattheexpenseofadeliberateandrigoroustreatment.MostresultsareprovenindetailHowever,manyofthesecanbeskippedinfavorofamoreproblem-solvingorientedapproachdependingonthereader'sobjectives.Somereadersmayliketoincorporatesomeformoftechnology(computeralgebrasystem(CAS)orgraphingcalculator)andthereareseveralinstancesinthetextwherethepoweroftechnologyisillustratedusingtheCasMaple.Furthermore,manyexercisesetshaveproblemsthatrequiresomeformoftechnologyfortheirsolutionTheseproblemsaredesignatedwithaoIndevelopingthefourtheditionwehaveoncemorekeptmaximumflexibilityofthematerialinmind.Insodoing,thetextcaneffectivelyaccommodatethedifferentemphasesthatcanbeplacedinacombineddifferentialequationsandlinearalgebracourse,thevaryingbackgroundsofstudentswhoenrollinthistypeofcourse,andthefactthatdifferentinstitutionshavedifferentcreditvaluesforsuchacourse.Thewholetextcanbecoveredinafivecredit-hourcourse.Forcourseswithalowercredit-hourvalue,someselectivitywillhavetobeexercised.Forexample,much(orall)ofChapterImaybeomittedsincemoststudentswillhaveseenmanyofthesedifferentialequationstopicsinanearliercalculuscourse,andtheremainderofthetextdoesnotdependonthetechniquesintroducedinthischapter.Alternatively,whileoneofthemajorgoalsofthetextistointerweavethematerialondifferentialequationswiththetoolsfromlinearalgebrainasymbioticrelationshipasmuchaspossible,thecorematerialonlinearalgebraisgiveninChapters2-7sothatitispossibletousethisbookforacoursethatfocusessolelyonthelinearalgebrapresentedinthesesixchapters.ThematerialondifferentialequationsiscontainedprimarilyinChapters1and8-1l,andreaderswhohavealreadytakenafirstcourseinlinearalgebracanchoosetoproceeddirectlytothesechaptersThereareothermeansofeliminatingsectionstoreducetheamountofmaterialtobecoveredinacourse.Section2.7containsmaterialthatisnotrequiredelsewhereinthetext,Chapter3canbecondensedtoasinglesection(Section3.4)forreadersneedingonlyacursoryoverviewofdeterminants,andSections4.7,5.4,andthelatersectionsofChapters6and7couldallbereservedforasecondcourseinlinearalgebra.InChapter8Sections8.4,8.8,and8.9canbeomitted,and,dependingonthegoalsofthecourse,Sections8.5and8.6couldeitherbede-emphasizedoromittedcompletelySimilarremarksapplytoSections9.7-9.10.AtCaliforniaStateUniversity,Fullertonwehaveafourcredit-hourcourseforsophomoresthatisbasedaroundthematerialinChapters1-9viiiPrefaceMajorChangesintheFourthEditionSeveralsectionsofthetexthavebeenmodifiedtoimprovetheclarityofthepresentationandtoprovidenewexamplesthatreflectinsightfulillustrationswehaveusedinourowncoursesatCaliforniaStateUniversity,Fullerton.OthersignificantchangeswithinthetextarelistedbeleOW1.ThechapteronvectorspacesinthepreviouseditionhasbeensplitintotwochaptersChapters4and5)inthepresentedition,inordertofocusseparateattentiononvectorspacesandinnerproductspaces.Theshorterlengthofthesetwochaptersisalsointendedtomakeeachofthemlessdaunting2.Thechapteroninnerproductspaces(Chapter5)includesanewsectionprovidinganapplicationoflinearalgebratothesubjectofleastsquaresapproximation3.Thechapteronlineartransformationsinthepreviouseditionhasbeensplitintotwochapters(Chapters6and7)inthepresentedition.Chapter6isfocusedonlineartransformations,whileChapter7placesdirectemphasisonthetheoryofeigenvaluesandeigenvectors.Oncemore,readersshouldfindtheshorterchapterscoveringthesetopicsmoreapproachableandfocused4.Mostexercisesetshavebeenenlargedorrearranged.Over3,000problemsarenowcontainedwithinthetext,andmorethan600concept-orientedtrue/falseitemsarealsoincludedinthetext5.Everychapterofthebookincludesoneormoreoptionalprojectsthatallowformorein-depthstudyandapplicationofthetopicsfoundinthetext6.ThebackofthebooknowincludestheanswertoeveryTrue-FalsereviewitemcontainedinthetextAcknowledgmentsWewouldliketoacknowledgethethoughtfulinputfromthefollowingreviewersofthefourthedition:JameyBassofCityCollegeofSanFrancisco,TamarFriedmannofUniversityofrochester,andlinghaiZhangofLehighUniversityAlloftheircommentswereconsideredcarefullyinthepreparationofthetextS.A.Annin:Ioncemorethankmyparents,ArthurandJuliannAnnin,fortheirloveandencouragementinallofmyprofessionalendeavors.Ialsogratefullyacknowledgethemanystudentswhohavetakenthiscoursewithmeovertheyearsand,insodoinghaveenhancedmyloveforthesetopicsanddeeplyenrichedmycareerasaprofessorFirst-OrderDifferentiaEquations1.1DifferentialEquationsEverywhereadifferentialequationisanyequationthatinvolvesoneormorederivativesofanunknownfunction.Forexample(1.1.1dxds(S-1)(1.1.2)aredifferentialequations.Inthedifferentialequation(1.1.1)theunknownfunctionordependentvariableisy,andxistheindependentvariable;inthedifferentialequation(1.1.2)thedependentandindependentvariablesareSandt,respectively.Differentialequationssuchas(1.1.1)and(1.1.)inwhichtheunknownfunctiondependsonlyonasingleindependentvariablearecalledordinarydifferentialequations.Bycontrast,thedifferentialequationLaplace'sequation)0involvespartialderivativesoftheunknownfunctionu(x,y)oftwoindependentvariablesxandy.SuchdifferentialequationsarecalledpartialdifferentialequationsOnewayinwhichdifferentialequationscanbecharacterizedisbytheorderofthehighestderivativethatoccursinthedifferentialequationThisnumberiscalledtheorderofthedifferentialequation.Thus,(l1.1)hasordertwo,whereas(1.1.2)isafirst-orderdifferentialequation1

第七版Indroduction_to_Mathematica_Statistics.Hogg,McKean,Craigseventhedition.pdfUIUC的STAT401统计课程教材ContentsPrefaceix1ProbabilityandDistributions11.1Introduction................................11.2SetTheory................................31.3TheProbabilitySetFunction......................101.4ConditionalProbabilityandIndependence...............211.5RandomVariables............................321.6DiscreteRandomVariables.......................401.6.1Transformations.........................421.7ContinuousRandomVariables......................441.7.1Transformations.........................461.8ExpectationofaRandomVariable...................521.9SomeSpecialExpectations.......................571.10ImportantInequalities..........................682MultivariateDistributions732.1DistributionsofTwoRandomVariables................732.1.1Expectation............................792.2Transformations:BivariateRandomVariables.............842.3ConditionalDistributionsandExpectations..............942.4TheCorrelationCoefficient.......................1022.5IndependentRandomVariables.....................1102.6ExtensiontoSeveralRandomVariables................1172.6.1∗MultivariateVariance-CovarianceMatrix...........1232.7TransformationsforSeveralRandomVariables............1262.8LinearCombinationsofRandomVariables...............1343SomeSpecialDistributions1393.1TheBinomialandRelatedDistributions................1393.2ThePoissonDistribution........................1503.3TheΓ,χ2,andβDistributions.....................1563.4TheNormalDistribution.........................1683.4.1ContaminatedNormals.....................174vviContents3.5TheMultivariateNormalDistribution.................1783.5.1∗Applications...........................1853.6t-andF-Distributions

目　录前言 1第1章系统开发技术介绍 3§1.1第1章JavaEE应用体系结构 3§1.1.1JavaEE应用多层体系结构 3§1.1.2JavaEE结构的优势 3§1.2Struts框架 3§1.2.1MVC设计模式 4§1.2.2Struts体系结构 4§1.3Hibernate框架 6§1.3.1ORM(对象关系映射) 6§1.3.2Hibernate简介 6§1.3.3Hibernate体系结构 6§1.4Hibernate框架 8§1.4.1Spring简介 8§1.4.2Spring核心技术 8§1.4.3Spring框架结构 9第2章系统分析 11§2.1系统可行性分析 11§2.1.1技术可行性 11§2.1.2社会可行性 11§2.2系统功能需求分析 12§2.3系统功能组成 13§2.3.1用例模型 13§2.3.2系统前台、后台UML活动图 15第3章数据库设计 17§3.1数据库选择 17§3.2系统表结构设计 17第4章系统详细设计和实现 23§4.1前台设计 23§4.1.1前台主页设计和实现 23§4.1.2登录注册模块 23§4.1.3商品展示模块 25§4.1.4购物车模块 28§4.1.5订单模块 30§4.2后台设计 30§4.2.1用户管理 31§4.2.2商品管理 31§4.2.3订单管理 33§4.2.4库存管理 34结论 36参考文献 37致谢 38

第一篇MATLAB入门篇　第1章MATLAB概述　　1.1MATLAB的产生与发展　　1.2MATLAB的优势与特点　　1.3MATLAB系统的构成　　1.4MATLAB桌面操作环境　　　1.4.1MATLAB启动和退出　　　1.4.2MATLAB主菜单及功能　　　1.4.3MATLAB命令窗口　　　1.4.4MATLAB工作空间　　　1.4.5M文件编辑/调试器　　　1.4.6图形窗口　　　1.4.7MATLAB文件管理　　　1.4.8MATLAB帮助　　1.5MATLAB的工具箱　　1.6小结　第2章MATLAB计算基础　　2.1MATLAB数值类型　　2.2关系运算和逻辑运算　　2.3矩阵及其运算　　　2.3.1矩阵的创建　　　2.3.2矩阵的运算　　2.4复数及其运算　　　2.4.1复数表示　　　2.4.2复数绘图　　　2.4.3复数操作函数　　2.5符号运算　　　2.5.1符号运算概述　　　2.5.2常用的符号运算　　2.6小结　第3章MATLAB绘图入门　　3.1MATLAB中绘图的基本步骤　3.2在工作空间直接绘图　　3.3利用绘图函数绘图　　　3.3.1二维图形　　　3.3.2三维图形　　3.4图形的修饰　　3.5小结　第4章MATLAB编程入门　　4.1MATLAB编程概述　　4.2MATLAB程序设计原则　　4.3M文件　　4.4MATLAB程序流程控制　　4.5MATLAB中的函数及调用　　　4.5.1函数类型　　　4.5.2函数参数传递　　4.6函数句柄　　4.7MATLAB程序调试　　　4.7.1常见程序错误　　　4.7.2调试方法　　　4.7.3调试工具　　　4.7.4M文件分析工具　　　4.7.5Profiler分析工具　　4.8MATLAB程序设计技巧　　　4.8.1嵌套计算　　　4.8.2循环计算　　　4.8.3使用例外处理机制　　　4.8.4使用全局变量　　　4.8.5通过varargin传递参数　　4.9小结　第5章Simulink仿真入门　　5.1Simulink仿真概述　　　5.1.1Simulink的启动与退出　　　5.1.2Simulink模块库　　5.2Simulink仿真模型及仿真过程　　5.3Simulink模块的处理　　　5.3.1Simulink模块参数设置　　　5.3.2Simulink模块基本操作　　　5.3.3Simulink模块连接　　5.4Simulink仿真设置　　　5.4.1仿真器参数设置　　　5.4.2工作空间数据导入/导出　　　5.4.2设置　　5.5Simulink仿真举例　　5.6小结第二篇神经网络提高篇　第6章MATLAB神经网络工具箱概述　第7章MATLAB神经网络GUI工具　第8章感知器神经网络　第9章线性神经网络　第10章BP神经网络　第11章径向基神经网络　第12章自组织神经网络　第13章反馈神经网络第三篇神经网络综合实战篇　第14章神经网络优化　第15章神经网络控制　第16章神经网络故障诊断　第17章神经网络预测　第18章Simulink中的神经网络设计　第19章自定义神经网络附录A工具箱函数列表参考文献

Linux安装Oracle11g所需程序包(x86_64)打包下载，包含：gcc-4.1.2elfutils-libelf-devel-0.125glibc-devel-2.5glibc-headers-2.5gcc-c++-4.1.2libaio-devel-0.3.106libstdc++-devel-4.1.2sysstat-7.0.2unixODBC-2.2.11unixODBC-devel-2.2.11

ContentsPrefacexiiiLimitsofLiabilityandDisclaimerofWarrantyofSoftwarexv1TheWirelessChannel:PropagationandFading11.1Large-ScaleFading41.1.1GeneralPathLossModel41.1.2Okumura/HataModel81.1.3IEEE802.16dModel101.2Small-ScaleFading151.2.1ParametersforSmall-ScaleFading151.2.2Time-Dispersivevs.Frequency-DispersiveFading161.2.3StatisticalCharacterizationandGenerationofFadingChannel192SISOChannelModels252.1IndoorChannelModels252.1.1GeneralIndoorChannelModels262.1.2IEEE802.11ChannelModel282.1.3Saleh-Valenzuela(S-V)ChannelModel302.1.4UWBChannelModel352.2OutdoorChannelModels402.2.1FWGNModel412.2.2JakesModel502.2.3Ray-BasedChannelModel542.2.4Frequency-SelectiveFadingChannelModel612.2.5SUIChannelModel653MIMOChannelModels713.1StatisticalMIMOModel713.1.1SpatialCorrelation733.1.2PASModel763.2I-METRAMIMOChannelModel843.2.1StatisticalModelofCorrelatedMIMOFadingChannel843.2.2GenerationofCorrelatedMIMOChannelCoefficients883.2.3I-METRAMIMOChannelModel903.2.43GPPMIMOChannelModel943.3SC妹妹IMOChannelModel973.3.1SCMLink-LevelChannelParameters983.3.2SCMLink-LevelChannelModeling1023.3.3SpatialCorrelationofRay-BasedChannelModel1054IntroductiontoOFDM1114.1Single-Carriervs.Multi-CarrierTransmission1114.1.1Single-CarrierTransmission1114.1.2Multi-CarrierTransmission1154.1.3Single-Carriervs.Multi-CarrierTransmission1204.2BasicPrincipleofOFDM1214.2.1OFD妹妹odulationandDemodulation1214.2.2OFDMGuardInterval1264.2.3OFDMGuardBand1324.2.4BERofOFDMScheme1364.2.5Water-FillingAlgorithmforFrequency-DomainLinkAdaptation1394.3CodedOFDM1424.4OFDMA:MultipleAccessExtensionsofOFDM1434.4.1ResourceAllocation–SubchannelAllocationTypes1454.4.2ResourceAllocation–Subchannelization1464.5Duplexing1505SynchronizationforOFDM1535.1Ef

在日常工作中，钉钉打卡成了我生活中不可或缺的一部分。然而，有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚，我总是得牢记打开钉钉应用，点击"工作台"，再找到"考勤打卡"进行签到。有时候因为工作忙碌，会忘记打卡，导致考勤异常，影响当月的工作评价。而且，由于我使用的是苹果手机，有时候系统更新后，钉钉的某些功能会出现异常，使得打卡变得更加麻烦。 另外，我的家人使用的是安卓手机，他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说，每次打卡都是一次挑战。他们总是担心自己会操作失误，导致打卡失败。 为了解决这些烦恼，我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习，我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。