數(shù)字電路與邏輯設(shè)計(jì)試題

中山大學(xué)學(xué)院工程專業(yè)2009級(jí)(2010學(xué)年秋季學(xué)期SE-211DigitalCircuitsandLogicDesign(A卷警示(考試形式： 考試時(shí)間:2小時(shí)警示 考試不授予學(xué)士方向 學(xué)號(hào)Multiplechoicequestions(2pointsforeachquestion,20pointsIftheperiodofaclocksignalis500ps,thefrequency20200220Thetimemeasurementbetweenthe90%pointonthetrailingedgeofapulsetothe10%pointonthetrailingedgeofthepulseiscalledtherisefallpulseWhentwopositivesignednumbersareadded,theresultmaybelargerthanthesizeoftheoriginalnumbers,creatinerflow.ThisconditionisindicatedbyachangeinthesignacarryoutofthesignazeroAssumethatafloatingpointnumberisrepresentedinbinary.Ifthesignbitis1,numberisnumberisexponentisexponentisABooleanexpressionthatisinstandardSOPformtheminimumlogiccontainsonlyoneproducthaseveryvariablein ineverynoneoftheThetimeintervalillustratedisholdTheapplicationillustratedisastabledatastorageAssumeyouwanttodecodethebinarynumber0011withanactive-HIGHThemissinggateshouldanANDanaNANDaNIfthedataselectlinesoftheMUXareS1S0=11,theoutputwillequaltoequaltoAssumeQ0isLOW.ThenextclockpulsewillFF1andFF2tobothFF1andFF2tobothFF1tolatch;FF2toFF1totoggle;FF2toPleasesolvethefollowingnumberconversion (total15 (2Convertdecimalnumber100.625to (2Expressdecimalnumber-85as8-bitnumberin1’scomplementform(2Expressdecimalnumber-85as8-bitnumberin2’scomplementform(2Convertdecimal 126 (3Octal8421BCDConvertthedecimalnumber3.248x104toasingle-precisionfloatingpointbinarynumber.Pleaseshowyourprocedure(4points)Weneedtodesignacircuitwith4inputs(markedasA,B,C,D)and2outputsX,Y.Basedonsystem ysis,weshouldhavetruetableasshowninthefollowing(total20points):ABCDXY000001000110001011001110010001010110011011011110100001100110101011101111110011110111111001111111ShowtheimplementationofthecircuitinSOPformbyusingonlyAND,OR,orNOTgates(3ShowtheimplementationofthecircuitinSOPformbyusingonlyNANDgates(3ShowtheimplementationofthecircuitinPOSformbyusingonlyAND,OR,orNOTgates(3ShowtheimplementationofthecircuitinPOSformbyusingonlyNates(3Designa2-bitlook-ahead-carryfulladderusingonlybasiclogicgates(AND,OR,NOT,NAND,NOR,XOR,XNOR). (total15points)DesignaMooreFSMtodetectabitsequence11001.Ifsuchsequenceisfound,outputbesetto1,otherwise,outputwillbesetto0.Overlapsequence,ifexists,shouldbedetected.PleaseuseJ-Kflipflopforthesystem. (total30points).Derivestate (4Encodestates(stateassignment)(2 (4ExpressJ-KFlip-Flopexcitetabletouse(3 DetermineminimumFli