電子與通信技術(shù)專業(yè)英語 第6版 課件 6版 Project 5 Exercises

電子與通信技術(shù)專業(yè)英語電子信息工程學(xué)院Project5

DigitalCircuitExercises1.WriteT(True)orF(False)besidethefollowingstatementsaboutthetext.a.Thetruthtableisusedtoshowthelogicgatefunction.b.ThethreemostcommonbasictypesofdigitallogicgatesaretheANDgate,theORgate,andtheNOTgate.c.AnimportantfunctionofNOTgateistoproducesignalinversionoraninputsignalthatisoppositeinnaturetotheoutputsignal.d.Thethreebasictypesofdigitallogicgatesandtheflip-floparethefourcircuitsmostcommonlyemployedinsuchsystems.e.Eveninalargescaledigitalsystem,suchasacomputer,control,ordigital-communicationsystem,therearealotofbasicoperations,whichmustbeperformed.2.Matchthefollowingtermstoappropriatedefinitionorexpression.a.NOTgate1.produceanoutputsignalthatisoppositeinnaturetotheinputsignalb.A×B=C2.inputAandinputBequalsoutputCc.A+B=C3.eitherinputAorinputB(orboth)equalsoutputCd.Thethreebasiclogicgates4.theANDgate,theORgate,andtheNOTgate

a.Thebasiclogicgatesareclassifiedintoseventypes:

gate,

gate,

gate,

gate,

gate,

gate,and

gate.b.AnimportantfunctionofNOTgateistoproducesignal

oranoutputsignalthatis

innaturetotheinputsignal.c.Thethreebasictypesofdigitallogicgatesandthe

arethefourcircuitsmostcommonlyemployedinsuchsystems.d.TheoperationofanORgateisoftenexpressedbytheequation

.3.Fillinthemissingwordsaccordingtothetext.Digitalsignalsandcircuitsarethevastandimportantsubject.Digitalsignalsarebinaryinnaturetakingonvaluesinoneoftwowell-definedranges.Thesetofbasicoperationsthatcanbeperformedondigitalsignalsisquitesmall.Thebehaviorofanydigitalsystem,(uptoandincludingthemostsophisticateddigitalcomputer)canberepresentedbyappropriatecombinationsofdigitalvariablesandthedigitaloperationsfromthissmallset.4.TranslatethefollowingparagraphintoChinese.Weconcernedwithdigitalsystemvariablesthattakeononlytwovalues(binaryvariables).Weconventionallydenotethesevaluesas“0”or“1”,andthenuseaspecialsetofrulescalledBooleanalgebratosummarizethevariouswaysinwhichdigitalvariablescanbecombined.Thisalgebraandmuchofthenotationareadopteddirectlyfrommathematicallogic.Thus,“l(fā)ogicvariable”or“l(fā)ogicop