外文文献-基于单片机的函数信号发生器设计.pdfVIP

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Single-Chip

SCMisalsoknownasmicro-controller(Micro-controllerUnit),commonlyusedlettersofthe

acronymMCUthatitwasfirstusedinindustrialcontrol.

OnlyasinglechipbytheCPUchipdevelopedfromadedicatedprocessor.Thefirstdesignis

byalargenumberofperipheralsandCPUonachipinthecomputersystem,smaller,moreeasily

integratedintoacomplexanddemandingonthevolumecontroldevicewhich.INTELsZ80isthe

firstdesignedinaccordancewiththisideaprocessor,thenonthedevelopmentofmicro-controller

anddedicatedprocessorshavepartedways.

Are8-bitmicro-controllerearlyor4bits.OneofthemostsuccessfulistheINTEL8031,for

asimple,reliableandgoodperformancewasalotofpraise.Thendevelopedin8031outof

MCS51MCUSystems.SCMsystemsbasedonthissystemuntilnowisstillwidelyused.Withthe

increasedrequirementsofindustrialcontrolfield,begana16-bitmicro-controller,becausethe

costisnotsatisfactorybuthavenotbeenverywidelyused.After90yearswiththegreat

developmentofconsumerelectronics,micro-controllertechnologyhasbeenahugeincrease.With

INTELi960series,especiallythelaterseriesofwidelyusedARM,32-bitmicro-controller

quicklyreplacehigh-end16-bitMCUstatusandenterthemainstreammarket.Thetraditional

8-bitmicro-controllerperformancehavebeentherapidincreasecapacityincreasecomparedto80

thenumberoftimes.Currently,high-end32-bitmicro-controllerclockedover300MHz,the

performancecatchingthemid-90sdedicatedprocessor,whiletheaveragemodelpricesfalltoone

U.S.dollars,themosthigh-endmodelonly10dollars.ModernSCMsystemsarenolongeronly

inthedevelopmentanduseofbaremetalenvironment,alargenumberofproprietaryembedded

operatingsyst