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1、学院姓名学号任课老师考场教室__________选课号/座位号………密………封………线………以………内………答………题………无………效……电子科技大学2010-2011学年第二学期期末考试A卷课程名称：_数字逻辑设计及应用__考试形式：闭卷考试日期：2011年7月7日考试时长：_120___分钟课程成绩构成：平时30%，期中30%，实验0%，期末40%本试卷试题由__六___部分构成，共__6___页。题号一二三四五六七八九十合计得分得分I.Fillyouranswersintheblanks(2’X10=20’)1.AparitycircuitwithNinputsneedN-1XO
2、Rgates.Ifthenumberof“1”inanNlogicvariablesset,suchasA、B、C、…W,isevennumber,then0.2.Acircuitwith4flip-flopscanstore4bitbinarynumbers,thatis,include16statesatmost.3.Amodulo-20countercircuitneeds5Dfilp-flopsatleast.Amodulo-288countercircuitneeds34-bitcountersof74x163atleast.4.A8-bitringcounterhas8no
3、rmalstates.Ifwewanttorealizethesamenumbernormalstates,weneeda4bittwisted-ringcounter.5.Iftheinputis10000000ofan8bitDAC,thecorrespondingoutputis5v.Thenaninputis00000001totheDAC,thecorrespondingoutputis5/128(0.0391)V;ifaninputis10001000,thecorrespondingDACoutputis5.3125V.第6页共6页学院姓名学号任课老师考场教室______
4、____选课号/座位号………密………封………线………以………内………答………题………无………效……得分II.Pleaseselecttheonlyonecorrectanswerinthefollowingquestions.(2’X5=10)1.Weneed(B)chipsof4K´4bitsRAMtoforma16K´8bitsRAM.A)2B)8C)4D)162.Todesigna"01101100"serialsequencegeneratorbyshiftregisters,weneeda(A)-bitshiftregisterasleast.A)5B)4C)3D)63.Fo
5、rthefollowinglatchesorflip-flops,(B)canbeusedtoformshiftregister.A)S-RlatchB)master-slaveflip-flopC)S-RlatchwithenableD)S’-R’latch4.Whichofthefollowingstatementsiscorrect?(C)A)TheoutputsofaMooremachinedependoninputsaswellasthestates.B)TheoutputsofaMealymachinedependonlyonthestates.C)Theoutputsof
6、aMealymachinedependoninputsaswellasthestates.D)A),B),C)arewrong.5.Thereisastate/outputtableofasequentialmachineasthetable1,whattheinputsequencesisdetected?(D)A)11110B)11010C)10010D)10110Table1SX01AA,0B,0BC,0B,0CA,0D,0DC,0E,0EC,1B,0S*,Z第6页共6页学院姓名学号任课老师考场教室__________选课号/座位号………密………封………线………以………内………答
7、………题………无………效……得分III.Analyzethesequential-circuitasshowninfigure1.[15’]1.Writeouttheexcitationequations,transitionequationsandoutputequation.[5’]2.AssumetheinitialstateisQ2Q1=00,completethetimingdiagramforQ2,Q1andZ.(Don’tneed
