《數(shù)字電子技術(shù)》PPT課件.ppt

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《數(shù)字電子技術(shù)》PPT課件.ppt

Figure8 1A2 bitasynchronousbinarycounter OpenfileF08 01toverifyoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 2TimingdiagramforthecounterofFigure8 1 Asinpreviouschapters outputwaveformsareshowningreen ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 3Three bitasynchronousbinarycounteranditstimingdiagramforonecycle OpenfileF08 03toverifyoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 4Propagationdelaysina3 bitasynchronous ripple clocked binarycounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 5Four bitasynchronousbinarycounteranditstimingdiagram OpenfileF08 05andverifytheoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 6Anasynchronouslyclockeddecadecounterwithasynchronousrecycling ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 7Asynchronouslyclockedmodulus 12counterwithasynchronousrecycling ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 8The74LS934 bitasynchronousbinarycounterlogicdiagram Pinnumbersareinparentheses andallJandKinputsareinternallyconnectedHIGH ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 9Twoconfigurationsofthe74LS93asynchronouscounter Thequalifyinglabel CTRDIVn indicatesacounterwithnstates ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 1074LS93connectedasamodulus 12counter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 11A2 bitsynchronousbinarycounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 12Timingdetailsforthe2 bitsynchronouscounteroperation thepropagationdelaysofbothflip flopsareassumedtobeequal ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 13TimingdiagramforthecounterofFigure8 11 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 14A3 bitsynchronousbinarycounter OpenfileF08 14toverifytheoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 15TimingdiagramforthecounterofFigure8 14 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 16A4 bitsynchronousbinarycounterandtimingdiagram PointswheretheANDgateoutputsareHIGHareindicatedbytheshadedareas ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 17AsynchronousBCDdecadecounter OpenfileF08 17toverifyoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 18TimingdiagramfortheBCDdecadecounter Q0istheLSB ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 19The74HC1634 bitsynchronousbinarycounter ThequalifyinglabelCTRDIV16indicatesacounterwithsixteenstates ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 20Timingexamplefora74HC163 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 21The74F162synchronousBCDdecadecounter ThequalifyinglabelCTRDIV10indicatesacounterwithtenstates ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 22Timingexamplefora74F162 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 23Abasic3 bitup downsynchronouscounter OpenfileF08 23toverifyoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 24 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 25The74HC190up downsynchronousdecadecounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 26Timingexamplefora74HC190 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 27Generalclockedsequentialcircuit ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 28Statediagramfora3 bitGraycodecounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 29ExamplesofthemappingprocedureforthecountersequencerepresentedinTable8 7andTable8 8 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 30Karnaughmapsforpresent stateJandKinputs ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 31Three bitGraycodecounter OpenfileF08 31toverifyoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 32 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 33 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 34 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 35Statediagramfora3 bitup downGraycodecounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 36JandKmapsforTable8 11 Thecontrolinput Y istreatedasafourthvariable ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 37Three bitup downGraycodecounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 38Twocascadedcounters allJandKinputsareHIGH ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 39TimingdiagramforthecascadedcounterconfigurationofFigure8 38 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 40Amodulus 100counterusingtwocascadeddecadecounters ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 41Threecascadeddecadecountersformingadivide by 1000frequencydividerwithintermediatedivide by 10anddivide by 100outputs ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 42 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 43Adivide by 100counterusingtwo74F162decadecounters ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 44Adivide by 40 000counterusing74HC1614 bitbinarycounters Notethateachoftheparalleldatainputsisshowninbinaryorder theright mostbitD0istheLSBineachcounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 45Decodingofstate6 110 OpenfileF08 45toverifyoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 46A3 bitcounterwithactive HIGHdecodingofcount2andcount7 OpenfileF08 46toverifyoperation ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 47Abasicdecade BCD counteranddecoder ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 48OutputswithglitchesfromthedecoderinFigure8 47 Glitchwidthsareexaggeratedforillustrationandareusuallyonlyafewnanosecondswide ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 49Thebasicdecadecounteranddecoderwithstrobingtoeliminateglitches ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 50StrobeddecoderoutputsforthecircuitofFigure8 49 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 51Simplifiedlogicdiagramfora12 hourdigitalclock LogicdetailsusingspecificdevicesareshowninFigures8 52and8 53 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 52Logicdiagramoftypicaldivide by 60counterusing74F162synchronousdecadecounters Notethattheoutputsareinbinaryorder theright mostbitistheLSB ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 53Logicdiagramforhourscounteranddecoders Notethatonthecounterinputsandoutputs theright mostbitistheLSB ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 54Functionalblockdiagramforparkinggaragecontrol ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 55Logicdiagramformodulus 100up downcounterforautomobileparkingcontrol ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 56Parallel to serialdataconversionlogic ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 57Exampleofparallel to serialconversiontimingforthecircuitinFigure8 56 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 58The74HC1634 bitsynchronouscounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 59Exampleofafailurethataffectsfollowingcountersinacascadedarrangement ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 60Exampleofafailureinacascadedcounterwithatruncatedsequence ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 61 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 62 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 63Trafficlightcontrolsystemblockdiagram ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 64Sequenceoftrafficlightstates ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 65Blockdiagramofthesequentiallogic ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 66Statediagramforthetrafficlightcontrolsystem ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 67Sequentiallogicdiagram ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 68Inputlogicforthe2 bitGraycodecounter ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 69Thesequentiallogic ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 70Blockdiagramofthecompletetrafficlightcontrolsystem ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 71Comparisonofasynchronousandsynchronouscounters ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 72Notethatthelabels namesofinputsandoutputs areconsistentwithtextbutmaydifferfromtheparticularmanufacturer sdatabookyouareusing ThedevicesshownarefunctionallythesameandpincompatiblewiththesamedevicetypesinotheravailableCMOSandTTLICfamilies ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 73 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 74 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 75 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 76 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 77 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 78 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 79 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 80 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 81 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 82 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 83 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 84 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 85 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 86 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 87 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 88 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 89 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 90 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 91 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 92 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 93 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved Figure8 94 ThomasL FloydDigitalFundamentals 9e Copyright 2006byPearsonEducation Inc UpperSaddleRiver NewJersey07458Allrightsreserved

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