Computer Science 1A Final Exam Questions and Answers Updated 2026.

Computer Science 1A Final
Exam Questions and Answers
Updated 2026
CharlesBBabbageB-
BAnswerBTheBfatherBofBcomputing.BInvented/designedBtheBdifferenceBengineBandBthe
BanalyticalBengine.



DifferenceBEngineB-
BAnswerBABwhollyBmechanicalBcomputerBwithBonlyBwheels,Bcogs,BandBgears.BInvente
dBbyBCharlesBBabbage.



AnalyticalBEngineB-
BAnswerB1stBmechanicalBcomputer.BRanBoffBofBpunchedBcards.BCreatedBbyBCharlesBB
abbage,BbutBneverBcompletedBbyBhim.BAdaBLovelaceBhelped.



AdaBLovelaceB-
BAnswerBSheBisBconsideredBtoBbeBtheBfirstBcomputerBprogrammer.BSheBwroteBaBcom
puterBlanguageBforBtheBAnalyticalBEngine.



JosephBMarieBJacquardB-
BAnswerBFrenchBinventorBofBtheBJacquardBloomBthatBcouldBautomaticallyBweaveBcom
plicatedBpatternsB(1752-1834)BusedBPUNCHBCARDS



HermanBHollerithB-
BAnswerBHeBinventedBtheB"TabulatingBMachine."BTheBTabulatingBMachineBusedBpunch
BcardsBtoBstoreBinformation.BItBwasBlaterBusedBtoBtabulateBtheBU.S.BCensus.



GraceBHopperB-
BAnswerBFoundBtheBfirstBcomputerB"bug"BfoundBinBtheBHarvardBMarkB1=I.BDevelope
dBtheBFIRSTBCOMPILER.

,WhatBthreeBcharacteristicsBdoBconsumersBlookBatBtoBnoteBdifferentBgenerationsBofBco
mputers?B-BAnswerBsize,Bspeed,Bcost



MauchlyBandBEckertB-BAnswerBtheBcreatorsBofBENIACBandBUNIVAC



WhatBwereBtheBbreakthroughBtechnologiesBforBeachBgenerationBofBcomputers?B-
BAnswerB1B-BvacuumBtubesBandBmagneticBdrums

2B-Btransistors

3B-BintegratedBcircuits

4B-Bmicroprocessor



vacuumBtubesBandBmagneticBdrumsB-BAnswerBFlemming



TransistorsB(1950's)B-
BAnswerBWilliamBShockley,BJohnBBardeen,BandBWalterBBrattain.BReplacedBvacuumBtub
es.



IntegratedBCircuitsB(1960's)B-
BAnswerBJackBKirbyBandBRobertBNoyceBdesignedBtheBintegratedBcircuit.BABcircuitBisBa
BtinyBchipBthatBcontainsBthousandsBofBtinyBcircuits.BIntegratedBcircuitsBareBaboutBthe
BsizeBofBaBfingernailBandBareBmadeBfromBsiliconeB(hardBplastic).BTheyBallowBelectricit
yBtoBflowBthroughoutBtheBcomputer.



MicroprocessorB-
BAnswerBTheBcentralBprocessingBunitBthatBisBgenerallyBmadeBfromBaBsingleBintegrate
dBcircuit.BTedBHoffBofBIntel.



WhatBdoBweBuseBtoBconvertBfromBBinary,BOct,BorBHexBtoBDecimal?B-
BAnswerBSumBofBtheBExpansionBofBParts



HowBdoBweBconvertBfromBDecimalBtoBBinary,BOct,BorBHex?B-BAnswerBDibbleBDabble

, BusesB-
BAnswerBDataBflowsBbetweenBdifferentBpartsBofBtheBcomputerBviaBbuses.BDataBbuses
,BAddressBbuses,BandBControlBbuses.



DataBBusB-
BAnswerBTheBlinesBonBtheBsystemBbusBthatBtheBCPUBusesBtoBsendBandBreceiveBdata
.



WhatBareBtheBbasicBcomponentsBofBtheBCPU?B-
BAnswerBregisters,BcontrolBunitB(CU),BArithmeticBLogicBUnitB(ALU)



WhyBdoBweBstoreBdataBandBinstructionsBonBregisters?B-
BAnswerBTheyBareBfastBandBtemporary



WhatBdoesBtheBALUBdo?B-
BAnswerBItBcarriesBoutBallBtheBarithmeticBandBlogicalBoperationsBsuchBasBaddition.Bs
ubtractionBandBlogicalBoperations



WhatBdoesBtheBCUBdo?B-
BAnswerBControlBprogram'sBoverallBexecution,BoneBofBCPUBcomponents



WhenBaBcomputerBisBturnedBoff,BwhichBmemoryBwillBpersist?B-BAnswerBROM



BootstrapBProtocolB(BOOTP)B-
BAnswerBABcomponentBofBTCP/IPBthatBallowsBcomputersBtoBdiscoverBandBreceiveBan
BIPBaddressBfromBaBDHCPBserverBpriorBtoBbootingBtheBOS.BOtherBitemsBthatBmayBbe
BdiscoveredBduringBtheBBOOTPBprocessBareBtheBIPBaddressBofBtheBdefaultBgatewayBf
orBtheBsubnetBandBtheBIPBaddressesBofBanyBnameBservers.BLOADSBTHEBOPERATINGBS
YSTEM.