数字电路与逻辑设计英文教学课件

Digital Circuit and LogicDesignEnglish Teaching•Introduction toDigital Circuitand Logic Design目录•Fundamentals of DigitalCircuitsCONTENT•Principles ofLogic Design•Description andVerificationof DigitalCircuits•Application ExamplesofDigital Circuits01Introduction toDigitalCircuit andLogic DesignDefinition and ImportanceDefinitionDigitalCircuitandLogic Design is abranch ofelectronic engineeringthat dealswiththe designand analysisof digital circuits andsystemsImportanceDigital CircuitandLogicDesignisimportant becauseit underminesthefoundation ofmodern electronic devices andsystems,including computers,smartphones,and manyother digitalproducts Itenables thecreation ofhighperformance,energy efficiency,and relateddigital systemsTheDevelopment HistoryofDigitalCircuits andLogicDesignEarly digitalTransistorized Integratedcircuitscircuits digital circuitsThe developmentof digitalIn the1950s,the transientIn the1960s,the inventionof thecircuitscan betraced backto thereplaced thevacuum tubeas theintegrated circuitallowed for the1940s,when thefirst electronicmain componentof digitalminiaturization of digital circuitsdigitalcomputers weredeveloped circuitsThis markedthe ThisLED tothe developmentofThese earlycomputers usedbeginning of the transitionalera,microprocessors anddigital signalvacuumtubes andtransistors towhich sawthe rapiddevelopment processors,which hasperformbinary arithmeticof digital circuits and logic designrevolutionized thefield ofdigitaloperations circuitand logic designThe applicationfields ofdigitalcircuits and logicdesignComputersDigitalcircuitsand logicdesign are essentialfortheoperation ofcomputersThey areresponsible forperforming arithmeticoperations,controlling dataflow,and executingprogramsCommunicationsDigital circuitsandlogicdesign are used incommunication systemsto encode,modulate,demodulate,and decodeinformation fortransmission overwired orwirelesschannelsElectronicsDigital circuitsandlogicdesignarefound ina widerange ofelectronicdevices,including telecommunications,radio,audio systems,video games,and manyotherconsumer electronicsproducts02Fundamentals ofDigitalCircuitsLogic gatecircuitAND Gate01It is a basiclogic gatethat performsthe ANDoperation Ithastwo inputsand oneoutput Ifboth inputsare high,the outputishigh Otherwise,the outputis lowORGate02It isanother basiclogic gatethat performsthe ORoperation Ithastwo inputsand oneoutput Ifeither input is high,the outputishigh Otherwise,the outputis lowNOTGate03Also knownas aninverter,it hasone inputand oneoutput If theinput ishigh,the outputis lowIftheinputislow,the outputishighTriggerRising Edge TriggerIt triggers an event or action when the signal levelrisksfrom lowto highFallingEdgeTriggerIt triggersan eventor actionwhen thesignal level fallsfromhigh tolowDouble EdgeTriggerIttriggersaneventoractionwhenthesignallevelrises andfallsRegisterFlipFlop RegisterCounter RegisterItstores asingle bitof dataand Itcounts thenumber ofclockcan beset orreset basedonacycles andoutputs thecountclock signalvalueLatched RegisterItlattices thedata inputwhen aclocksignal isreceived andholdsit untilthe nextclock cycleEncoderand DecoderEncoderItconverts aset of binaryinputs intoa binary code thatreportsa specificoutput valueDecoderItconverts abinarycodeintoa setofbinaryoutputs thatrepresentsthe correspondingoutputvalues03Principles ofLogic DesignKarnaughmap simplificationmethodKarnaugh mapK-mapA graphicalmethod used to simplifyBoolean functionsby groupingsimilar termsand identifyingtheminimum number of distinct product termsrequired torepresent thefunctionMinimalityThe objectiveis toretain thesmall possiblerepresentation ofthe Boolean function usingK-maps,reducing thenumberofdistinctproducttermsExampleGive aBooleanfunctionF A,B,C,D,its K-map willdisplay thefunctions truthtable and assistin simplifyingitBoolean AlgebraBasicoperationsANDΛ,OR∨,NOTÅ,and XOR⊕are thefundamentaloperations ofBoolean algebraTheoriesand lawsBooleanalgebra hasseveral theoriesand laws,such asDeMorgans laws,which describethe behavior of theseoperationsApplicationsBooleanalgebra isused in digitalcircuit design todescribeand analyzethe behaviorof logicalsystemsImplementation oflogical functionsMappingfunctions01Assigning specificboolean operatorsto reportagiven logicalfunction iscalled mappingCombination logic02Combinationlogiccircuits aredesigned toimplementlogical functionswithout feedback loopsThey are made up of AND,OR,and NOTgatesSequential logic03Sequential logiccircuits usefeedbackloopsto storestateand implementationfunctions thathavememory Theyaremadeupofflip flopsandcombined logicgates04Description andVerificationof DigitalCircuitsHardware DescriptionLanguage HDL•HDL isa high-level languageused todescribe thestructureand behaviorofdigitalcircuits Itallowsdesigners tospecify the design ina levelof abstraction,using textualor schematicrepresentationsHardware DescriptionLanguage HDLHDLsinclude Verilogand VHDL,which are the mostwidely usedlanguagesfor hardwaredesignHDLs provideconstructs fordescribing thefunctionality ofdigitalcircuits,including combinationand sequentiallogicHDLs supportsimulation andsynthesis toolsthat enabledesigners toverifytheir designsand generateimplementation readynetlistsSimulation andVerification ofDigital CircuitsSimulationisa process Simulationtools,such asVerification isa processVerification techniquesthat allows designers to ModelSimand NCSim,that ensuresthat adesign includefunctionaltest their designs using a allowdesignerstomeets itsspecifications simulation,formalcomputer modelbefore simulatetheirdesignsand functionscorrectly validation,static timingimplementationusingacombination of analysis,and dynamictestbenchesand stimulussimulation.vectorsTesting andtroubleshooting ofdigital circuitsTestresults areanalyzed toidentifyany designdefects orfailuresTestbenchesareusedto Troubleshootinginvolvesgenerate testvectors thatare identifyingand fixingdesignapplied tothedesignunder issuesthat causethe circuittotest DUTmalfunctioningTesting isaprocessthat Techniquesused forensuresthatadesign troubleshootingincludingfunctions correctlyunder waveformanalysis,timingvarious conditionsanalysis,and signalprobing05Application ExamplesofDigital CircuitsMicroprocessordesignMicroprocessor MicroprocessorMicroprocessorfunction structuredesign processMicroprocessorsarethecore Modernmicroprocessors areThe design of amicroprocessorcomponents ofdigital systems,typically basedon thevon involveslogical synthesis,physicalresponsible forprocessing andNeumann architecture,design,and verificationIt requirescontrollingvariable operationsconsistency of an instructionfetch expertise in digitalcircuitdesign,unit,decoder,ALU,register file,VLSI design,and computerandmemory interfacearchitectureDesign ofDigital SignalProcessing DSPSystemDSP functionDSP systems areusedtoprocess signalsindigitalform,such asaudio,video,and communicationsignalsDSP structureADSPsystemtypically consistsofasignal input/output unit,memory,ALU,andcontrol unitIt usesdedicated hardwareto achievehigh speedsignal processingDSPdesign processesThe designofa DSPsystem requiresexpertise indigital signalprocessingalgorithms,VLSI design,and hardwaredescription languagesComputerControl SystemDesign•Computer control system function:Computer controlsystems areusedto automaticallycontrol industrialprocesses,machines,and otherphysicaldevices•Computer controlsystem structure:A computer controlsystemtypically consistsof sensors,actors,a controller,andacomputer Ituses feedbackcontrol toregulate thebehaviorofthe controlled system•Computer controlsystem designprocess:Thedesignofacomputercontrolsystem requiresexpertiseincontroltheory,system identification,and computerprogramming Italso requiresknowledge ofthe specificapplicationdomain andthe characteristicsofthecontrolledsystem感谢您的观看THANKS。