文档介绍：StructureandfunctionoftheMCS-51seriesStructureandfunctionoftheMCS-51seriesone-puterMCS-51isanameofapieceofone--gradeone-putersofMCS-51seriesin1980afterintroducing8one-putersofMCS--puterthechipshave,suchas8051,8031,8751,80C51BH,80C31BH,etc.,position,-51serialone--putersystemismadeupofseveralfollowingparts:(1)Onemicroprocessorof8(CPU).(2)AtslicedatamemoryRAM(128B/256B),itusenotdeposittingnotcanreading/datathatwrite,suchasresultnotmiddleofoperation,finalresultanddatawantedtoshow,etc.(3)ProcedurememoryROM/EPROM(4KB/8KB),isusedtopreservetheprocedure,-puters,suchas8031,8032,80C,etc..(4)Four8runsidebysideI/OinterfaceP0fourP3,eachmouthcanuseasintroduction,mayuseasexportingtoo.(5)Twotimer/counter,eachtimer/countermaysetupandcountintheway,usedtocounttotheexternalincident,cansetupintoatimingwaytoo,puter.(6)Fivecutoffcuttingoffthecontrolsystemofthesource.(7)OneallduplexingserialI/OmouthofUART(universalasynchronousreceiver/transmitter(UART)),isitrealizeone-puterorone-putertousefor.(8)Stretchoscillatorandclockproducecircuit,-,CPUisacoreoftheone-puter,mandcentre,madeupofsuchpartsasarithmeticunitandcontroller,etc..Thearithmeticunitcancarryon8personsofarithmeticoperationandunitALUoflogicoperationwhileincludingone,the1storingdevicetemporariliesof8,storingdevice2temporarily,8',registerBandprocedurestateregisterPSW,,,,.