数字系统设计mcq fsm datapath and control buffer开始时间2014年12月19日星期五

开始时间星期五State完成于耗时439成绩25.00/满分25.00题目题目FlagConnectingaweakhighsignal'H'withaweaklowsignal'L'willresolveForcingunknownWeakhighWeakunknownWeaklowYouransweris正确答案是：Weakunknown题目FlagStudythefollowingstateIftheinitialstateisA,whatwouldbethelasttwooutputoftheFSMiftheinputsequence(first)0,1,1,0,0,1,0,11,00,01,10,1Youransweris题目题目题目FlagThefollowingfigureshowssomenextstatelogicforanFillintheblanksbelowandcompletethestateexcitationtableIftheinitialstateis"11",howmanystateswillNOTbereached?题目FlagWhatisthemostsuitableexnationG:R3←R1,R2←inregistertransfernotationThevalueinR1isfirstcopiedtoR3whenG='1',andthenthatinR3iscopiedtoThevalueinR1iscopiedtoR3andatthesametimethevalueofR3iscopiedtoWhenG='1',thevalueinR1iscopiedtoR3andatthesametimethevalueofR3iscopiedtoThevalueinR1isfirstcopiedtoR3,andthenthatinR3iscopiedtoYouransweris正确答案是：WhenG='1',thevalueinR1iscopiedtoR3andatthesametimethevalueofR3iscopiedto题目FlagFillintheblankswithcorrect58-bitshiftregisterscanbeusedtoimplementaLIFOoranFIFOthatcanstoreuptowordsofbitsinFlagFlagAshifterisbuiltusinga4-to-1MatchthecontrolvalueSwiththeappropriateS=Shiftright2S=ShiftS=ShiftS=Youransweris正确答案是：S3Shiftright2bitsS2ShiftrightS0ShiftleftS1题目题目FlagAnFSMXhas4Trytomatchdifferentstateassignments(encoding)forOne-0001,0010,0100,Almostone-000,001,010,Simple00,01,10,Youransweris正确答案是：One-hot–0001,0010,0100,1000,Almostone-hot–000,001,010,100,Simplebinary–00,01,10,题目FlagWhichofthefollowingis/aregoodpractice(s)inmodellingFSMwithVHDL?(chooseallcorrectanswer(s))Alwaysspecifyanduseone-hotUseasingleprocesstodescribeallnextstatelogic,outputlogicandstateDefineusetypeforstatesandavoidunnecessarycustomstateassignment/AdddefaultsignalassignmentintheprocessassociatedwiththenextstatelogicandoutputYouransweris正确答案是：Defineusetypeforstatesandavoidunnecessarycustomstateassignment/encoding.,Adddefaultsignalassignmentintheprocessassociatedwiththenextstatelogicandoutputlogic.题目题目FlagAtri-statebufferhasinputsI,EandanoutputMatchtheinputswiththecorrespondingoutput.I='0',E='1'I='1',E=I='1',E='Z'(HighI='0',E='Z'(HighYouransweris题目题目FlagThedatapathisgivenasThereTherearetwoMUXes,oneregisterandoneadder-subtractor.Thedatais4bitsWhichofthefollowingfunctionis/arepossiblewiththisX-X+IIIIandIIand获得2.00分中的2.00分正确答案是：d.IIandWhatisthemeaningofthec