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StructureandfunctionoftheMCS-51series
StructureandfunctionoftheMCS-51seriesone-chipcomputerMCS-51isanameof
apieceofone-chipcomputerserieswhichIntelCompanyproduces.Thiscompany
introduced8top-gradeone-chipcomputersofMCS-51seriesin1980afterintroducing8
one-chipcomputersofMCS-48seriesin1976.Itbelongtoalotofkindsthislineof
one-chipcomputerthechipshave,suchas8051,8031,8751,80C51BH,80C31BH,etc.,
theirbasiccomposition,basicperformanceandinstructionsystemareallthesame.8051
dailyrepresentatives-51serialone-chipcomputers.
Anone-chipcomputersystemismadeupofseveralfollowingparts:(1)One
microprocessorof8(CPU).(2)AtslicedatamemoryRAM(128B/256B),itusenot
deposittingnotcanreading/datathatwrite,suchasresultnotmiddleofoperation,final
resultanddatawantedtoshow,etc.(3)ProcedurememoryROM/EPROM(4KB/8KB),is
usedtopreservetheprocedure,someinitialdataandforminslice.Butdoesnottake
ROM/EPROMwithinsomeone-chipcomputers,suchas8031,8032,80C,etc..(4)Four
8runsidebysideI/OinterfaceP0fourP3,eachmouthcanuseasintroduction,mayuse
asexportingtoo.(5)Twotimer/counter,eachtimer/countermaysetupandcountinthe
way,usedtocounttotheexternalincident,cansetupintoatimingwaytoo,andcan
accordingtocountorresultoftimingrealizethecontrolofthecomputer.(6)Fivecutoff
cuttingoffthecontrolsystemofthesource.(7)OneallduplexingserialI/Omouthof
UART(universalasynchronousreceiver/transmitter(UART)),isitrealizeone-chip
computerorone-chipcomputerandserialcommunicationofcomputertousefor.(8)
Stretchoscillatorandclockproducecircuit,quartzcrystalfinelytuneelectriccapacityneed
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