Pozadí
IntheearlyInformationProcessingSystem, theComputeronlyServedoneuser.Althoughbatchprocessingcaneffectivelyimprovetheutilizationrateofthemachine,theuserlosestheabilitytocontrolandmodifythejobafterhandingoverthejobtothesystem,anditusuallytakesseveralhoursorevendaystogetthedesiredresult.Usershopetodirectlyenjoycomputerresourcesthroughtheirownterminals,sotheideaoftimesharingappears.Duetothehighspeedofthecomputer, itcansermultipleuserSefTientlyOnTheBasisoftimeSharing.
Systerinntrodukce
Thetime-sharingprocessingsystemisacomputersystem(seefigure),whichincludesmanyindependent,relativelylow-speedonlineterminaldevicesthatcanbeusedatthesametime(seeonlineprocessing),eachterminalcandirectlyaccessthecentralprocessingunit.TheCentralProcessingunitisCrolledByAclockandSwitchesFroMoneterminalToTotherCordingToActiontime.ItCompleteSapartofeachJobwithInthecifiedTiMelice, nezaujakresultofTheInTomeDeProcessing, a antenturnstoantherotterterminal, asoonuntiltheJobiSalloverlover -.TheTiMeliceasSignedToeachEsEsveryshort, přehled, asi1/40sekunda, butduetothehighspeedofthecomputer, itcanstillCompleteAlotoFoperationProcessingDuringThistime.SwitchingBetweenseSersersextremeLyfRequent, který je možné.Uživatelé jsou v závislosti na důkazně oddíl s názvem.Obecně platí, že AkelePriorityCanasObeGegivenTothejobSofeachuser ajobsarearrangedinaqueaueaccordingtothepriority.JobswithhigherpriorityMaygetMorerlongerTiMeslices.
Provize
TheTime-SharingsystenisdifferentfromThoseSesignedfortheSpecialPurposeofadepadepadepant.ItsTriveStoProvideServicesFormulToleDartmentsandhandLaNeaWiderRangeofBusiness ascience.Úkon.Proto je ITSMAINMEMORYHASALARGECAPACITYANDTHECTRALPROCESSINGUNITHADITHADVERSATITYTOSUPPORTALLCOMPORMINGPROGRAMMINGANDANDONCONTOLFUNCICE.Časový sdíleníProcessinghasalarGenumberOfusers'informationStoreDentheSameFileSystem, SoconfidentialitySoreSportant, a RecesedyMeasuresNeedTobeTaken (SeedaDasecurity).
Systemuse
Časový sdíleníprocesingiSthebasicMethodofCommerComComputingServices.Commercialcomputingcompaniessellprocessingtimetoalltypesofcustomersandprovideavarietyofservices,sothatcustomersonlyneedtocareabouttheapplicationsystemstheyhavebuilt,withouthavingtoconsiderissuessuchasdatabasemanagementanddatacommunication.ZákaznickesCanConnectTotheComStystemThroughAreMoteterMalandPayAccordingTotheTiminalConlectedTotheCentralProcessingUnitandTeCoocCuedbytheCentralProcessinginit.RůznéSchoolsCanuSetheTeTheTime-SharingProcessToProvideStudentsWithopporteNitiestogeTontheComputer.CommercialAndustrialsectorsoneEdInformationProcessingSystemswithTime SharingCabibility INTHERIARDIALIEWORK.
TheDesignOfThesingle-Chiptime-Sharingsystem
Jednorázový kontrolní systém s jedním chipsystémem, SomostoftheCurrentrentrentrentrentrentrents-chipsystemSarestillreal-timesystems.TheDesigniDiDideasofTetime-SharingSystemAreoftenthosemulti-ChannelRepetitiveTectionControlsystemsthatcantUlyEMTHEDESIGNIDIDEASofThetime-Sharingsystem.EventheSemulti-ChannelRepetitiveTeectionControlsystems, ITSREAL-TIMEPERFORMANCEISVESIESVERSAnt.Inotherwords,thetime-sharingsystemdesignideaisappliedinthesingle-chipmicrocomputersystem,butitstimelinessshouldbeconsideredfirst.
S theimProvemenTofTheperFormanceofThesingle-ChipMicrocomputer, TheSoftwareofSomeHardwarefunctionsInTheSystemDofThesingle-ChipMicrocomrocomrocomrocomSomSageneraltrend.Buatthesametime, TherapidChipTechnologyalsoprovidestHepossibilityForlow-CosthardwaretoCompletehigh-Performance-Functions.AshafunctionIsRealizedByhardwareorOftwareCannotBegeneralized.Itisthegoalofeverysingle-chipsystemDesignertoachieveTheHighestCost-PerformratioofTheenSesystemThroughStystemDesign.
InthehardwaredesignofThesingle-chiptime-sdílený systém, theTimelinessRequirementofTheSystemCannotbered a theProcessingSPeeDofEasts-chipcomputersrelativněslowow.Proto by se měl intheSignOfTheInterfaceHardware, AnimeDevicestHatcanholdtheamountofinformation, takové, takové-flopsAndLatches, být použit.AtTheSametime, itisRequiredTthesedevicesshouldbetri-stategateoutput, Whoisitismulti-ChannelTeltime-SharingSystemstem.WhenthecPuisNotaccessed, thedeviceoutputpresentsAhigHiGhepedancetofacilitaTethebus'SaccesstoOtterDevices.Také někdy konzumační operace s tím, žeSoftwaresHouldbetransferredTohardwareforCmplece.Takový, jakDynamicdisplay, thesisNoneedTouseIntel? 8155orintel?.ItcanbedonewithIntel? 8279Ormax7218andmax7219 ProgramblePeripheraldevices, sothatthedisplayisbothbeautifullandBeautiful.jednoduchý.Samozřejmě, která serelefttothehardwaretoCocolete awHichfunctionsAreleftTotheSoftWaretoComplete, měla by být povýšena na základě podřízenosti..Inshort, TheoverallConsiderationsHousedBegivenTothepUrsuiToftHeHighestPrice-PerformanCeratio.