注：不含主觀題第1題單選題(1分)InformationinE2PROM()AneedstobeerasedwithspecialequipmentUVBisthesameasthereadingandwritingspeedofRAMCcanbeerasedelectricallyDissolidifiedandcannotbeerased第2題單選題(1分)Binary11010110isconvertedtohexadecimalas()AA6HBACHCD6HDDCH第3題多選題(2分)Whichofthefollowingarepartofthecomputer()AInterfaceadapterBMemoryCMicroprocessorDPrinter正確答案：ABC第4題單選題(1分)ThedatainRAMisnotlostafterpower-off.()ArightBfalse第5題單選題(1分)Asinglechipisachip.()ArightBfalsetest第1題單選題(1分)WhatisstoredintheprogramcounterPC()AThenextinstructiontobeexecutedbytheCPU.BTheaddressofthenextinstructiontobeexecutedbytheCPU.CTheaddressofthememory.DThedataofthememory.第2題單選題(1分)WhatisthesecondfunctionofP2port?()AAccesstheaddressoftheupper8bitsoftheoff-chipmemory.BAccesstheaddressofthelower8bitsoftheoff-chipmemory.CTheinputofexternalInterrupt.DAccessdatafromoff-chipmemory.第3題單選題(1分)Supposethefrequencyofthecrystaloscillatoris12MHZ,whatisthetimeofonemachinecycle?()A4μsB1μsC0.0833μsD0.167μs第4題單選題(1分)Whichoneofthese4portsiswithoutthesecondfunction?()AP3BP0CP1DP2第5題單選題(1分)Thepowersupplyvoltageofthemicrocomputerpowersupplyis220V()AfalseBright第6題單選題(1分)TheinterruptvectoraddressisthefirstaddressofthespacereservedforeachinterruptsourceinROM.()AfalseBright第7題單選題(1分)Eachbitinthebitaddressableareahasabitaddress,andthebitaddressrepresentationisthesameasthebyteaddressrepresentation.()AfalseBrighttest第1題單選題(1分)Timedworkingmodeistocount()AInstructioncycleBClockcycleCMachinecycleDOscillationperiod第2題單選題(1分)Thegatecontrolbitis0,whichmeansthatthetimeristurnedon?()AControlledbyTR0andINT0simultaneouslyBSimultaneouslycontrolledbyTR0andINT1COnlycontrolledbyTR0DOnlycontrolledbyINT0第3題單選題(1分)WhenT0worksinmode3,itistwo8-bittimers.Whentheupper8bitsarefullandoverflow,heoverflowflagis()ATR1BTR0CTF0DTF1第4題單選題(1分)WhenthetimerT1generatesaninterrupt()bitwillbe1ATF0BTR0CTR1DTF1第5題單選題(1分)ThecountingmodeistocounttheexternalpulseofP0port()AfalseBright第6題單選題(1分)TheworkingmoderegisterTMODisnotbitaddressable()AfalseBright第7題單選題(1分)Whenthetimerworksinmode2,whenthelower8bitsarefullandoverflow,theupper8bitsreloadthetimerconstantintothelower8bits,andnointerruptisgeneratedatthistime.()AfalseBright第8題單選題(1分)TimerinterruptreferstoapplyingforinterrupttotheCPUwhenthetimerisfullandoverflows.()AfalseBrighttest第1題單選題(1分)Theinterruptflagbitofexternalinterrupt1is__()AIT1BTF1CIE1DTI第2題單選題(1分)Whichofthefollowinginput/outputmethodsisprocessedbytheCPU,andavoidsthedisadvantagesof"requiresperipheralstoalwaysbeinareadystate"and"CPUmustwaitduringprocessing".()AInterruptmethodBUnconditionaltransmissionCDMAmethodDQuerytransmission第3題單選題(1分)Iftheinterruptserviceprogramofthetimer/counter0ofaMCS-51single-chipmicrocomputersystemisplacedinaspaceatthebeginningofthe3000haddressintheprogramstoragearea,theinstructionLJMP3000hthatjumpstotheinterruptserviceprogramofthetimer/counter0shouldbeplacedintheROMaddressareaatthebeginningofthe()interruptvectoraddress.A000BHB0003HC0013HD0032H第4題單選題(1分)When89C51singlechipmicrocomputerallowsCPUtorespondtointerruptrequestofserialport,its()bitiniemustbe1.AESandEABEAandET0CET1andEADEX0andET0第5題單選題(1分)WhentheserialportsendsaninterruptrequesttotheCPUoftheMCU,iftheCPUallowsandacceptstheinterruptrequest,theCPUwillautomaticallygotothefollowingaddress()toexecute.A0003HB000BHC0023HD0013H第6題單選題(1分)Amongthefiveinterruptsources,thesoftwarecandeterminewhethertheinterruptlevelofeachinterruptsourceishighorlow,butinthesamelevel,thehighestpriorityofqueuing()byhardwareis()interrupt.AExternalinterruptINT0BExternalinterruptINT1CTimerT1DTimerT0第7題單選題(1分)Intheinterruptallowregister,theEAbitoftheinterruptcontrolregisterisusedto?()ACPUtotalinterruptallowcontrolbitBAllowedcontrolbitofaninterruptsourceCInterruptrequesttotalflagbitDSerialportinterruptallowbit第8題單選題(1分)Theresponseprocessoftheinterruptis()Pushthebreakpointaddress(PCvalue)intothestacktoprotecttheRregister,ACCandflagbitinformation.Executeinterruptreturninstruction,automaticallypopupbreakpointtoPC,returntomainprogram,recoverrregister,ACC,flagbitinformation,continuetoexecuteinterruptedmainprogram.Transfertointerruptserviceprogramaccordingtointerruptvectoraddress.A123B213C132D312第9題單選題(1分)Theminimuminterruptresponsetimeof89C51is()machinecyclesandthemaximumis()machinecycles.A26B15C36D38第10題多選題(2分)Thetriggermodeoftheexternalinterruptof89C51single-chipmicrocomputeris__()ATriggeronrisingedgeBTriggeronfallingedgeCLowleveltriggerDHighleveltrigger正確答案：BC第11題多選題(2分)Thefollowinginterruptsourcesareinternalinterrupts:()ATF1BTI、RICTF0DIE0正確答案：ABC第12題多選題(2分)Thebreakpointaddressis__()AInterruptvectoraddress.BStartaddressofinterruptserviceroutine.CCurrentPCvalue.DTheaddressofthenextinstructiontobeexecutedbytheCPUattheinterruptedmainprogram.正確答案：CD第13題多選題(2分)Thefunctionofreti,thelastinstructionoftheinterruptserviceprogram,isto___()APopupthebreakpointaddresstothePCtorecoverotherprotectedcontentsBPressthebreakpointaddresstothestackandotherprotectioncontentsCReturntothefirstaddressoftheinterruptserviceprogramDSiterestoration正確答案：AD第14題多選題(2分)TheinterruptsourcesinMCS-51are___()ATimer1interruptBExternalinterrupt0CSerialportinterruptDExternalinterrupt1正確答案：ABCD第15題單選題(1分)89C51eachinterruptsourcehasitsinterruptrequestinputpinonthechip.()AfalseBrighttest第1題單選題(1分)TheaddressingmodeofMOVA,#3AHis()ADirectaddressingBRelativeaddressingCRegisteraddressingDImmediateAddressing第2題單選題(1分)MOVA,3AHisaddressedby()ARelativeaddressingBRegisteraddressingCImmediateAddressingDDirectaddressing第3題單選題(1分)Thetransferinstructionthatcanaccesstheinternaldatastorageis()AMOVinstructionBACALLinstructionCMOVXinstructionDMOVCinstruction第4題單選題(1分)WhatisthemaximumpossibleLJMPjumpspace()A2KBB256BC64KBD4KB第5題多選題(2分)Inthe89C51instructionsystem,theinstructionreadbytheCPUtotheoff-chipRAMis()AMOVXA,@RiBMOVXA,@DPTRCMOVX@DPTR,ADMOVX@Ri,A正確答案：AB第6題單選題(1分)ExecutetheMULABinstructionandmultiplythetwo8-bitunsignedNumbersinaccumulatorAandaccumulatorB.Thelowbytesoftheresulting16-bitproductarestoredinBandthe

highbytesarestoredinA.Afalse

Bright第7題單選題(1分)IntheMcS-51instruction,the16-bitimmediatenumbertransferinstructionis:MOVDPTR,#data16()Afalse

Bright第8題單選題(1分)Given:DPTR=22FFH,afterexecutingINCDPTR,theresult:DPTR=2300H()Afalse

Brighttest第1題單選題(1分)Whichportcanbeusedaseitheradatalineoranaddressline?____()AportP3BportP1CportP2DportP0第2題單選題(1分)TheinstructionsofMCUtoaccessexternalstorageis____.()AMOVBDJNZCMOCDMOVX第3題單選題(1分)ThesignalthatcancontrolMCUaccessthepinofinternalROMorexternalROMis____.()ABALECD第4題單選題(1分)Themainfunctionofthe74LS373inthememoryexpansioncircuitisto()AStoreaddressBStoredataCLatchesaddressDLatchdatatest第1題單選題(1分)TheconnectionbetweenADC0809and89C51canbeusedtojudgetheEOCoftheconvertedsignal()AQuerymethodBEitherqueryorinterruptcanbeusedCNoneoftheaboveDInterruptmode第2題多選題(2分)WhichofthefollowingcomponentsdoesDAC0832include()A8-bitDACregisterB8-bitD/aconverterC8-bitinputregisterD8-bitdecoder正確答案：ABC第3題多選題(2分)ThefollowingstatementaboutLEDdynamicdisplaymodeiscorrect()AWhenacharacterisdisplayedonthedisplay,thecorrespondingsegment(LED)isconstantlyturnedonoroffuntilanothercharacterisdisplayed.BSegmentselectionsendsthefontcodeofthecharactertobedisplayed.CYourcommoncathode(commonterminalK0)isconnectedto+5Vpowersupply;ifitiscommonanode(commonterminalK0),itisgrounded.DEveryoneinthemonitorlightsupinturn.正確答案：BD第4題多選題(2分)Thefollowingstatementsaboutad0809chiparecorrect()AStartisthestarta/Dconversionsignal,andthehighlevelisvalidBALEistheaddresslockpermissionsignal,validatlowlevelCEOCistheconversioncompletionsignal,effectiveatlowlevelDADDA,addbandADDCareaddresssignals,representingtheselectedchannelnumber正確答案：AD第5題單選題(1分)Independentkeymeansthateachkeyisconnectedtoaninputdatalineindependently.()Afalse

Bright第6題單選題(1分)WhenLEDdynamicdispla