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1、ThesinglechipcomputerabbreviationMicrocontrolleristypicalofembeddedMicrocontrollercontroller(MicrocontrollerUnit),commonEnglishlettersistheabbreviationofMCUsaidMicrocontroller,itwasfirstusedinindustrialcontrolfield.SCMbychipinsideonlyCPUdedicatedproce
2、ssor.TheearliestdesignconceptisthroughthehugeamountsofperipheralandCPUintegrationinachip,makethecomputersystemsmaller,moreeasytointegrateintothecomplexandtovolumedemandingcontrolequipmentof.Intel-basedZ80istheearliestdesignedaccordingtothiskindofthoug
3、httheprocessor,henceforth,SCManddedicatedprocessordevelopmentparted.Earlymicrocontrolleris8bitsor4digit.Oneofthemostsuccessfulintel-based8031issimple,reliableperformance,becausegoodgotalotofpraise.Theninthemicrocomputer8031developedMCS51seriesmicrocon
4、trollersystems.BasedonthissystemofSCMsystemhaveuntilnowinwidespreaduse.Withtheimprovementofindustrialcontrolarearequirement,begintoemerge16-bitsinglechip,butbecausethepriceisnotidealdidnotgetverywidely.Afterthe1990swithconsumerelectronicproductsdevelo
5、pment,microcontrollertechnologyhasbeenatremendousincrease.AstheINTELi960seriesespeciallylaterARMserieswidely,32-bitSCMrapidlyreplacing16-bitsinglechipofhigh-endstatus,andintothemainstreammarket.Whilethetraditional8bitmicro-controllerperformancealsoobt
6、ainedtherapidincrease,processingpowerthan1980sraisedhundredstimes.Atpresent,high-end32-bitSCMfrequencyhasexceeded300MHz,performancestraightafterthemiddleof90'sofdedicatedprocessor,whereasnormaltypeex-factorypricedroppedto$1,thehighest-profile[1]typewa
7、sonlytendollars.ContemporarySCMsystemnolongeronlyinLuoJienvironment,developmentanduseofspecialembeddedoperatingsystemiswidelyusedinthewholerangeofsingle-chipmicrocomputer.Whileinasahandheldcomputersandmobilephoneskeyprocessingofhigh-endmicrocontroller
8、evencandirectlyusethespecialWindowsandLinuxoperatingsystem.Single-chipprocessormorethandedicatedsuitableforusewithembeddedsystem,soithasgainedthemostapplications.Infactmicrocontrolleristheworldlargestnumberofthecomputer.Modernhumanlifethatareu
