单片机]avr,c和pic单片机比较（single chip microcomputer]avr, c and pic scm comparison）

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1、单片机]avr,c51和pic单片机比较（Singlechipmicrocomputer]avr,C51andPICSCMcomparison）Duetotheinternaleightbitmicrocontrollerhastheadvantagesofsimplestructure,smallvolume,lowcost,usedinsomeofthemoresimplecontrollerisverywide.Eveninthepresentcentury,intheSCMapplication,stilloccu

2、pyaconsiderableshare.Theeightbitmicrocontrollervariety,thisarticleonlycommonlyusedasasimplecomparisoninperformance,forthereadersforreferencewheninuse.1.51series51eightbitmicrocontrollerseriesofthemostwidelyusedisIntel,astheproductofreasonablehardwarestructure,inst

3、ructionsystemspecification,coupledwiththeproductionhistoryof"long"andhastheadvantagesofFirstimpressionsarestrongest.Theworldhasmanyfamouschipcompanypurchased51chipcorepatentedtechnology,andexpandtheperformanceonthebasisofthechip,furtherperfect,hasformedahugesystem

4、,untilnowstillintherenovation,themicrocontrollerworldraiseaBabelofcriticismofspeculation.Therehasbeenspeculationthatthe51chipmayeventuallyformthestandardMCUchipinfact.Itisoneofthe51seriesofadvantagesfromtheinternalhardwareorsoftware,acompletesetoftheoperatingsyste

5、m,calledbitprocessor,orBooleanprocessor.Itisnottheobjectbutawordorbyte.Itisnotonlyapieceofsomespecialfunctionregistersforprocessing,suchastransfer,setandcleared,testing,butalsoalogicoperation,itsfunctioniscomplete,easytouse.Althoughothertypesofsingle-chiphasaproce

6、ssingfunction,butcanbealogicaloperationisrare.Inthe51serieschipRAMintervalalsoopenedupaspecialdualfunctionaddressinterval,sixteenbytes,unitaddress20Hto2FH,whichcanbeusedasabyteprocessing,butalsocanbeusedforprocessing(forprocessing,128bits,thecorrespondingbitaddres

7、sis00H~7FH),theuseofextremelyflexible.Thisfunctionwillundoubtedlyprovideuserswithgreatconvenience,becauseofamorecomplexprogramwillencounteralotofbranchesintheoperationprocess,andthereforeneedtoestablishmanyflagsintheoperationprocess,theneedfortheflagissetandcleare

8、dordetection,todeterminethedirectionofrunningprogram.Theimplementationofthisprocess(includingallthepreviousfunction),onlyonebitoperationinstructions.Exa