數(shù)字電路與邏輯設(shè)計試題

1、Wewillcontinuetoimprovethecompanysinternalcontrolsystemsteadyimprovementinabilitytomanagecontroloptimizebusinessprocessestoensuresmoothprocessesresponsibilitiesinplacetofurtherstrengtheninternalcontrolsplayacontrolpostin

2、dependentoversightroleofevaluationcomplyingwiththirdpartyresponsibilitytoactivelymakeuseofinternalaudittoolsdetectpotentialmanagementstreamlinestardizerelatedtransactionsstrengtheningoperationsinaccdancewithlaw.Deepening

3、theinfmationmanagementtoensurefullcommunication“zeroresistance“.ToconstantlyperfectERPBFSPIMISSCMinfmationsystembasedconstructionfullintegrationinfmationsystemachievedinfmationresourcessharedtoexpPtalsystemapplicationofb

4、readthdepthplayinfmationsystemonenterpriseofAssistantroletoperfectdailyrunmaintenanceoperationofrecdspromoteproblemreasonsanalysissystemhovertostrengtheningBFSERPSCMtechnologyapplicationoftrainingimproveemployeesapplicat

5、ioninfmationsystemofcapacitylevel.Humanisticcaretoensure“zero.“TostrengtheningHumanitiescarecontinuestofostercompanywindcleargasareheartShunofcultureatmospherestrengtheninglovehelpedtrappedcaredifficultemployeescarriedou

6、tstyleactivitiesrichemployeeslifestrengtheninghealthlabourprotectionganizationcareerhealthmedicalcontrolcareeragainstcontinuestoimplementationpsychologicalwarningpreventionsystemtrainingemployeeshealthofacterstableofmood

7、enterprisingofattitudecreatedfriendlyfraternityofHumanitiesenvironment.Tostrengthenriskmanagementensurethatthebusinessof“zerorisk“.Tostrengthenedbusinessplansmanagementwillbusinessbusinessplanscovertoalllevelensurethebus

8、inesscancontrolincontroltocloseconcernfinancialcoalelectriclinkageenergysavingschedulingnationalpolicytrendsstrengtheningtrackactiveshouldtoimplementationStateownedassetsmethodfurtherspecificationbusinessfinancialmanagem

9、enttoperfectrisktubecontrolsystemachievedriskrecognitionmeasureassessmentreptcontrolfeedbackofclosedringmanagementimproveriskpreventioncapacity.Tofurtherstardizetradingstrivetoachieve“accdingtolawstardizefair.“Innovation

10、ofperfmancemanagementtoensurethatpotentialemployees“zerofly“.Tostrengthenperfmancemanagementprocesscontrolenhanceemployeeevaluationlevelsofeffectivecommunicationtoimproveperfmancemanagement.Tofurtherquantifyrefineemploye

11、estards...Wkfullplaypartybranchmembersin“fivetypeEnterprise“constructionintheofcerolefightingftressrolepioneermodelroletocontinuestostrengthening“fourgood“l(fā)eadershipconstructionfullplaylevelscadresinenterprisedevelopment

12、intheofbackbonebackboneroletofullstrengtheningmembersyouthwkfullplayyouthemployeesincompanydevelopmentintheoffceroletoimproveindependentCommissionagainstcruptionwklevelstrengtheningonenterprisebusinesskeylinkofeffectiven

13、essmonited.maintainstability.Tofurtherstrengthenpublicityeducationimprovetheoveralllegalsystem.Wemuststrengthensafetymanagementestablishimprovetheeducationsupervisionevaluationasoneofthetrafficsafetymanagementmechanism.T

14、oconscientiouslysumuptheOlympicsecuritycontrolspromotingintegratedmanagementtoahigherlevelhigherstardsahigherlevelofdevelopment.EmployeestodayislunarcalendaronDecember24theoxBellisabouttoringatthistimeofyearweclearlyfeel

15、thepulseoftheXXpowergenerationcompanytoflourishtomeclearlyhearXXpowergenerationcompaniesmaturesymmetrybreathing.Recallingpastoneanotheracrossarailingweareenthusiasticfullofconfidence.Futuredevelopmentopptunitieswemeexcit

16、ingfightmespirited.Employeesletustogetheracross2013fullofchallengesopptunitiestocreateagreenlowcostoperationfullofhumanecareofawldclasspowergenerationcompanywkhard!TheoccasionoftheSpringFestivalmysincerewishthatyouthefam

17、iliesofthestaffinthenewyeargoodhealthhappyhappy《數(shù)字電路與邏輯設(shè)計》試題《數(shù)字電路與邏輯設(shè)計》試題3參考答案參考答案一.填空題填空題(10)1一個觸發(fā)器有Q和Q兩個互補的輸出引腳，通常所說的觸發(fā)器的輸出端是指Q，所謂置位就是將輸出端置成1電平，復(fù)位就是將輸出端置成0電平。2我們可以用邏輯函數(shù)來表示邏輯關(guān)系，任何一個邏輯關(guān)系都可以表示為邏輯函數(shù)的與或表達式，也可表示為邏輯函數(shù)的或與表達式。3

18、計數(shù)器和定時器的內(nèi)部結(jié)構(gòu)是一樣的，當對不規(guī)則的事件脈沖計數(shù)時，稱為計數(shù)器，當對周期性的規(guī)則脈沖計數(shù)時，稱為定時器。4當我們在計算機鍵盤上按一個標為“3”的按鍵時，鍵盤向主機送出一個II碼，這個II碼的值為33H。5在5V供電的數(shù)字系統(tǒng)里，所謂的高電平并不是一定是5V，而是有一個電壓范圍，我們把這個電壓范圍稱為高電平噪聲容限；同樣所謂的低電平并不是一定是0V，而也是有一個電壓范圍，我們把這個電壓范圍稱為低電平噪聲容限。二.選擇題選擇題(1

19、0)1在數(shù)字系統(tǒng)里，當某一線路作為總線使用，那么接到該總線的所有輸出設(shè)備（或器件）必須具有b結(jié)構(gòu)，否則會產(chǎn)生數(shù)據(jù)沖突。a.集電極開路；b.三態(tài)門；c.灌電流；d.拉電流2TTL集成電路采用的是b控制，其功率損耗比較大；而MOS集成電路采用的是a控制，其功率損耗比較小。a.電壓；b.電流；c.灌電流；d.拉電流3欲將二進制代碼翻譯成輸出信號選用b，欲將輸入信號編成二進制代碼選用a，欲將數(shù)字系統(tǒng)中多條傳輸線上的不同數(shù)字信號按需要選擇一個送到

20、公共數(shù)據(jù)線上選用c，欲實現(xiàn)兩個相同位二進制數(shù)和低位進位數(shù)的相加運算選用e。a.編碼器；b.譯碼器；c.多路選擇器；d.數(shù)值比較器；e.加法器；f.觸發(fā)器；ｇ.計數(shù)器；h.寄存器4卡諾圖上變量的取值順序是采用b的形式，以便能夠用幾何上的相鄰關(guān)系表示邏輯上的相鄰。a.二進制碼；b.循環(huán)碼；c.II碼；d.十進制碼5根據(jù)最小項與最大項的性質(zhì)，任意兩個不同的最小項之積為0，任意兩個不同的最大項之和為1。a.不確定；b.0；c.1三.簡答題簡答題

21、(50)1分別寫出（或畫出）JK、D、T和T’四個觸發(fā)器的特征方程、真值表和狀態(tài)轉(zhuǎn)換圖。2請分別完成下面邏輯函數(shù)的化簡。1).)DECBA()ED)(CBA(F???????答：原式)DECBA()]ED()CBA([????????)DE)CBA(())DE)CBA((???????))CBA()CBA((DEDE)CBA()CBA(????????????DE?2).)EHDBA)(BA)(CA)(CBA(F????????Wewi

22、llcontinuetoimprovethecompanysinternalcontrolsystemsteadyimprovementinabilitytomanagecontroloptimizebusinessprocessestoensuresmoothprocessesresponsibilitiesinplacetofurtherstrengtheninternalcontrolsplayacontrolpostindepe

23、ndentoversightroleofevaluationcomplyingwiththirdpartyresponsibilitytoactivelymakeuseofinternalaudittoolsdetectpotentialmanagementstreamlinestardizerelatedtransactionsstrengtheningoperationsinaccdancewithlaw.Deepeningthei

24、nfmationmanagementtoensurefullcommunication“zeroresistance“.ToconstantlyperfectERPBFSPIMISSCMinfmationsystembasedconstructionfullintegrationinfmationsystemachievedinfmationresourcessharedtoexpPtalsystemapplicationofbread

25、thdepthplayinfmationsystemonenterpriseofAssistantroletoperfectdailyrunmaintenanceoperationofrecdspromoteproblemreasonsanalysissystemhovertostrengtheningBFSERPSCMtechnologyapplicationoftrainingimproveemployeesapplicationi

26、nfmationsystemofcapacitylevel.Humanisticcaretoensure“zero.“TostrengtheningHumanitiescarecontinuestofostercompanywindcleargasareheartShunofcultureatmospherestrengtheninglovehelpedtrappedcaredifficultemployeescarriedoutsty

27、leactivitiesrichemployeeslifestrengtheninghealthlabourprotectionganizationcareerhealthmedicalcontrolcareeragainstcontinuestoimplementationpsychologicalwarningpreventionsystemtrainingemployeeshealthofacterstableofmoodente

28、rprisingofattitudecreatedfriendlyfraternityofHumanitiesenvironment.Tostrengthenriskmanagementensurethatthebusinessof“zerorisk“.Tostrengthenedbusinessplansmanagementwillbusinessbusinessplanscovertoalllevelensurethebusines

29、scancontrolincontroltocloseconcernfinancialcoalelectriclinkageenergysavingschedulingnationalpolicytrendsstrengtheningtrackactiveshouldtoimplementationStateownedassetsmethodfurtherspecificationbusinessfinancialmanagementt

30、operfectrisktubecontrolsystemachievedriskrecognitionmeasureassessmentreptcontrolfeedbackofclosedringmanagementimproveriskpreventioncapacity.Tofurtherstardizetradingstrivetoachieve“accdingtolawstardizefair.“Innovationofpe

31、rfmancemanagementtoensurethatpotentialemployees“zerofly“.Tostrengthenperfmancemanagementprocesscontrolenhanceemployeeevaluationlevelsofeffectivecommunicationtoimproveperfmancemanagement.Tofurtherquantifyrefineemployeesta

32、rds...Wkfullplaypartybranchmembersin“fivetypeEnterprise“constructionintheofcerolefightingftressrolepioneermodelroletocontinuestostrengthening“fourgood“l(fā)eadershipconstructionfullplaylevelscadresinenterprisedevelopmentinth

33、eofbackbonebackboneroletofullstrengtheningmembersyouthwkfullplayyouthemployeesincompanydevelopmentintheoffceroletoimproveindependentCommissionagainstcruptionwklevelstrengtheningonenterprisebusinesskeylinkofeffectivenessm

34、onited.maintainstability.Tofurtherstrengthenpublicityeducationimprovetheoveralllegalsystem.Wemuststrengthensafetymanagementestablishimprovetheeducationsupervisionevaluationasoneofthetrafficsafetymanagementmechanism.Tocon

35、scientiouslysumuptheOlympicsecuritycontrolspromotingintegratedmanagementtoahigherlevelhigherstardsahigherlevelofdevelopment.EmployeestodayislunarcalendaronDecember24theoxBellisabouttoringatthistimeofyearweclearlyfeelthep

36、ulseoftheXXpowergenerationcompanytoflourishtomeclearlyhearXXpowergenerationcompaniesmaturesymmetrybreathing.Recallingpastoneanotheracrossarailingweareenthusiasticfullofconfidence.Futuredevelopmentopptunitieswemeexcitingf

37、ightmespirited.Employeesletustogetheracross2013fullofchallengesopptunitiestocreateagreenlowcostoperationfullofhumanecareofawldclasspowergenerationcompanywkhard!TheoccasionoftheSpringFestivalmysincerewishthatyouthefamilie

38、softhestaffinthenewyeargoodhealthhappyhappyYC11J1KQF1C11J1KQF2C11J1KQF3&CP&111111(3)邏輯功能①輸出為Y1的電路的邏輯功能是電路實現(xiàn)了輸入奇數(shù)個有效時輸出是為1即全加器的Si。②輸出為Y2的電路的邏輯功能是電路實現(xiàn)了輸入的兩個或兩個以上有效時輸出為了，即全加器的Ci.5請分析并回答下圖的時序邏輯電路的功能。答：1）根據(jù)圖可寫出電路的驅(qū)動方程：2）將驅(qū)動方程

39、代入JK觸發(fā)器的特征方程Qn1=JQnKQn中，得狀態(tài)方程為：Q1n1=Q2Q3Q1Q2n1=Q1Q2Q1Q3Q2Q3n1=Q1Q2Q3Q2Q33）寫出輸出方程為：Y=Q2Q34）每經(jīng)過七個時鐘觸發(fā)脈沖以后輸出端Y從高電平跳變?yōu)榈碗娖剑译娐返臓顟B(tài)循環(huán)一次。所以此電路具有對時鐘信號進行計數(shù)的功能，且計數(shù)容量等于七，稱為七進制計數(shù)器。四.分析設(shè)計題分析設(shè)計題(30)1請用與非門組成全加器，畫出邏輯圖。解：（1）列出真值表。根據(jù)題意，要實現(xiàn)

40、全加器功能，所以其輸入變量應(yīng)含有兩個相加位Ai，Bi和低位來的進位Ci1。其輸出應(yīng)含有位的相加結(jié)果Si與本次相加是否向高位的進位Ci。由此，畫出輸入輸出關(guān)系如下圖（2）寫出邏輯表達式。（3）將邏輯函數(shù)化為1iii1iii1iii1iiii1iii1iii1iii1iiiiCBACBACBACBA=CCBACBACBACBA=S與非門的形式。全加器AiBiCi1SiCi輸入輸出AiBiCi1SiCi00000001100101001101