资源描述：
《关于单片机外文文献》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、ABOUTSCMItcanbesaidacrossthetwentiethcentury,thethree"electric"era,thatis,electricalera,theelectronicage,andhasnowenteredthecomputerage.However,suchacomputer,usuallyreferstothepersonalcomputer,referredtoasPC.Itconsistsofthehost,keyboard,monitoretc..Anothertypeofcomputer,mostpeopledonotknow
2、how.Thiscomputeristosmarttogiveavarietyofmechanicalmicrocontroller(alsoknownasmicro-controller).Asthenamesuggests,thiscomputersystemonlyusedthesmallestoneIC,youcanperformsimpleoperationsandcontrol.Becauseofitssmallsize,usuallyhiddeninachargedmechanical"stomach"Lane.Itistheentiredevice,like
3、thehumanbrainplaysarole,itgoeswrong,thewholedevicewasparalyzed.Now,thisMCUhasaverywidefieldofuse,suchassmartmeters,real-timeindustrialcontrol,communicationsequipment,navigationsystems,homeappliancesandsoon.Oncethemicrocontrollerwereusingavarietyofproducts,youcanservetoupgradetheeffectivene
4、ssoftheproduct,oftenintheproductnameisprecededbytheadjective-"smart",suchaswashingmachinesandsointelligent.Atpresent,sometechnicalpersonneloffactoriesorotheramateurelectronicsdeveloperstoengageinoutofcertainproducts,notthecircuitistoocomplex,thatis,functionsaretoosimpleandeasytobecopied.Th
5、ereasonmaybestuckintheproductwithouttheuseofamicrocontrollerorotherprogrammablelogicdevice.SCMbasiccomponentisacentralprocessingunit(CPUinthecomputingdeviceandcontroller),read-onlymemory(usuallyexpressedasaROM),read-writememory(alsoknownasRandomAccessMemoryMRAMisusuallyexpressedasaRAM),inp
6、ut/outputport(alsodividedintoparallelportandserialport,expressedasI/Oport),andsocomposed.Infactthereisalsoaclockcircuitmicrocontroller,sothatduringoperationandcontrolofthemicrocontroller,canrhythmicmanner.Inaddition,thereareso-called"breaksystem",thesystemisa"janitor"role,whenthemicrocontr
7、ollercontrolobjectparametersthatneedtobeinterventiontoreachaparticularstate,canafterthis"janitor"communicatedtotheCPU,sothatCPUprioritiesoftheexternaleventstotakeappropriatecounter-measures.Electricboilertemperaturesystem1.MCUAmicrocontroller(orMCU)isacomputer
