电子专业参赛课件 数字电子技术(课件)lec08

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1、2021/10/3Chapter5CombinationalLogicAnalysis1Chapter5OutlineLecture8:CombinationalLogicAnalysis--15-1BasicCombinationalLogicCircuits.5-2ImplementingCombinationalLogic.****CombinationalLogicDesignExample.5-3TheuniversalpropertyofNANDandNORgates.5-4CombinationallogicusingNANDandNORgates.5-5logiccircuit

2、operationwithpulsewaveforminputs.****Theconceptofraceandstatichazard.Lecture8Lecture92021/10/3Chapter5CombinationalLogicAnalysis2KeyKnowledgeinLecture8Lecture8:CombinationalLogicAnalysis--1Basiccombinationallogiccircuit;SOPExpressionImplementationtoLogicCircuit;Thegeneralproceduresfordesigningandana

3、lyzingcombinationallogiccircuits.Developcertainskillsforlogicabstraction;ApplicationsofBooleanalgebraandKarnaughmapinlogicdesignandanalysis;Understandthetrafficlightfaultdetectionsystemandcomputerball-takinggamedesignexamples.DifficultTopics:Logicfunctionformmutualconversion;Logicabstraction.2021/10

4、/3Chapter5CombinationalLogicAnalysis3BasicCombinationalLogicCircuitsLecture8:CombinationalLogicAnalysis--1AND-ORLogic2021/10/3Chapter5CombinationalLogicAnalysis4TruthtablefortheAND-ORlogicofpreviousfigureLecture8:CombinationalLogicAnalysis--1INPUTSABCDABCDOUTPUT00000001001000110100010101100111100010

5、01101010111100110111101111000000010000000100000001101010110001000100011111Fora4-inputAND-ORlogiccircuit,theoutputXisHIGHifbothinputAandBareHIGHorbothinputCandDareHIGH.2021/10/3Chapter5CombinationalLogicAnalysis5AND-ORLogicCircuitDesignExampleLecture8:CombinationalLogicAnalysis--1Thechemicalisstoredi

6、nthreedifferenttanks.Alevelsensorineachtankproducesahighvoltagewhenthelevelofchemicalinthetankdropsbelowaspecifiedpoint.Designacircuitthatmonitorsthechemicallevelineachtankandindicateswhenthelevelinanytwoofthetanksdropsbelowthespecifiedpoint.sensorChemicalLOW,sensorHIGHIftwotanksoutofthreeareLOW,the

7、nalarm.2021/10/3Chapter5CombinationalLogicAnalysis6DesignSolutionofTankLevelIndicatorLecture8:CombinationalLogicAnalysis--1Seedesigndemonstrationprocess.2021/10/3Chapter5CombinationalLogicAnalysis7Bas