单片机防酒后驾驶控制系统相关英文及翻译

单片机防酒后驾驶控制系统相关英文及翻译

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1、.英文原文DataConvertersThecurrentupsurgeintheuseofdigitalprocessingtechniques,broughtaboutbydevelopmentsinverylargescaleintegration,hasforcedtheroleoftheinterfaceelementsbetweenanaloganddigitalsystemstotheforefrontofattention.Dataconvertersaretheseinterfaceelements.Althou

2、ghtheywereonceregardedbyelectronicsengineersasexpensive,ratherspecializedpiecesofequipment,theyarenowcommonplace.Theyareavailableasself-containedfunctionalunits,inbothmodularandlowcostintegratedcircuitfrom.Noonewithaninterestinmodernelectronicinstrumentationtechniques

3、canaffordtubewithoutasoundknowledgeandunderstandingoftheoperation,capabilitiesandlimitationsofthesedevices.USEFULNESSOFCONVERTERSInmanyoftherealworldsystemsstudiedbyscientistsandengineersthesystemparametersarecontinuouslychangingquantities(analogvariables)andwhenelect

4、ronicmeasurementtechniquesareuseddataisderivedinanalogformastheelectricaloutputsignalofatransducer.Itisperfectlypossibletoprocess,manipulateandstoreanalogdatausingapurelyanalogelectronicsystem:negativefeedbacktechniquescanmakeanalogsystemsperformveryprecisely.[1]Howev

5、er,theaccuracyofapurelyanalogsystemisoftennotusablebecauseofthedifficultyofrending,recordingandinterpretinganalogdatawithhighaccuracy.Also,whenlargeamountsofanalogdataareinvolvedthetaskofanalysisandstorageassumesmammothproportions.Digitalelectronicsystemscanbemadetopr

6、ocessrapidlyandaccurately,tomanipulateandtostorelargeamountsofdata.Theadventoflowcostdigitalmicroprocessorsystemshasdrasticallyreducedthecostofimplementingdigitaldataprocessing.Microprocessorsmakeitpossibletoextendtheuseofelectronicdigitaltechniquesintoareaswheretheyw

7、ereformerlynotconsideredpracticablebecauseofeconomicconsiderations.However,mdigitalcircuitsonlyoperateondigitaldata–thescientistwhowishestoavailhimselfofthepowerofdigitaltechniquesmustfirsttransformhisanalogdataintodigitalform.Asystemcalledananalogtodigitalconverter,A

8、DC,isusedtoperformthisfunctionandasystemcalledadigitaltoanalogconverter,DAC,performstheoppositetypeofconversion,transforming

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