Upload
wong-soon-yaw
View
218
Download
0
Tags:
Embed Size (px)
DESCRIPTION
digital
Citation preview
Dr Michael Tan Loong PengPhD (Cambridge)Senior LecturerFaculty of Electrical EngineeringUniversiti Teknologi Malaysia
SKEE1223: Digital Electronics0 Introduction&CourseOutline
Lecturer
DrMichaelTan,[email protected]
Dr Michael Tan received his B. Eng. (electricaltelecommunication) and M. Eng. (electrical) degrees fromUniversiti Teknologi Malaysia (UTM), Skudai, Malaysia, in 2003and 2006, respectively. He conducted his postgraduate researchin nanoscale MOSFET modeling at the Intel Penang DesignCenter, Penang, Malaysia. He obtained his Ph.D. degree in 2011at the University of Cambridge, Cambridge, UK. He is a seniorlecturer at UTM. He used MATLAB extensively for his researchand has published many journal articles with more than 24accumulated impact factors. Dr Michael is an IEEE member,member of IET (MIET), graduate member of IEM (GRAD IEM),and member of Queens' College.
Cambridge
DrMichaelTan,[email protected]
DrMichaelTan,[email protected]
GeneralInformation
Room: P19a0502012 Phone: 075557171 Email: [email protected] Website:http://michael.fke.utm.my/ Notes:http://michael.fke.utm.my/download_skee1223_2014
DrMichaelTan,[email protected]
LectureHours Lecture Monday2:00pm 4:00pm Thursday12:00pm 1:00pm
Lectureattendancewillbetakenmakesure>80%
Classnotes,slidesandtutorialswillbeposted:http://michael.fke.utm.my/download_skee1223_2014
DrMichaelTan,[email protected]
MarksDistribution
Test1 15% Test2 15% Test3 15% Assignments/Quiz 20% Final 50%
DrMichaelTan,[email protected]
CourseInformation
Thiscourseintroducesstudentsto numbersystems(2weeks) basicgates(2weeks) MSIcircuits(2weeks) flipflops(2weeks) Countersandregisters(2weeks) Memorydevices(2weeks) Logicfamilies(2weeks)
Seecourseinformationforoutcomeandcontents(downloadfromwebsite)
DrMichaelTan,[email protected]
References
1. ThomasL.Floyd,"DigitalFundamentals"9hEd.,PrenticeHall,2007**
2. Tocci &Widmer,"DigitalSystems PrinciplesandApplications",10Ed.,Prentice Hall,2007.
3. M.MorrisMano,"DigitalDesign",4'hEd.PrenticeHall,2007.
**highlyrecommended
DrMichaelTan,[email protected]
IntroductiontoDigitalElectronics
Whystudydigitalelectronics? Whyisitimportant? Whatisthemostbasiccomponentofdigitalelectronics?
Examplesofdigitalelectronicsystems?
DrMichaelTan,[email protected]
HistoryofDigitalElectronics 1947:FirsttransistoratBellLabsbyBardeenandBrattain
1950:JunctiontransistorbyWilliamShockley
1954:FirstsilicontransistorfromTexasInstruments
1955:FieldEffectTransistor(FET)developedatBellLabs
DrMichaelTan,[email protected]
HistoryofDigitalElectronics(cont.) 1958:FirstICbyJackKilbyofTexasInstruments
1960:FirstMOSFETfabricatedbyKahng ofBellLabs
1963:CMOSinventedbyFrankWanlass ofFairchildSemiconductor
1971:FirstMicroprocessor,theIntel4004with2300transistors
2006:IntelCore2Duowith820milliontransistors
DrMichaelTan,[email protected]
AnalogandDigitalsignals
Analog:quantitythathascontinuous values Digital:quantitythathasdiscrete values
DrMichaelTan,[email protected]
AnalogandDigitalsignals
Analog:quantitythathascontinuous values Digital:quantitythathasdiscrete values
DrMichaelTan,[email protected]
AnalogQuantity
Definition:aquantitythathascontinuousvalues.
Examples Speed,time,current,sound,pressure,distance
speedometer thermometerclock sound
DrMichaelTan,[email protected]
DigitalQuantity
Definition:aquantitythathasadiscrete setofvalues.
Examples: Digitalclock,digitalthermometer
DigitalthermometerDigitalclock
DrMichaelTan,[email protected]
Analog
Changesoveracontinuousrangeofvalues
Analogvs.Digital
Digital
Changesinstantaneously/indiscretesteps
DrMichaelTan,[email protected]
Analogvs.Digital
Isthisananalogordigitalsystem?
DrMichaelTan,[email protected]
AnalogvsDigitalSignals Analogsignalscantakeanyvoltagevalues,i.e.1V,2.5V,23V,0.34V,etc.
Digitalsignalscantakeonlytwovoltagevalues,i.e.5Vand0V(oranytwodistinctvalues)
Forsimplicity,5Visreferredas1and0Visreferredas0
DrMichaelTan,[email protected]
AnalogandDigitalSystems
Analogsystem:microphonespeaker,analogradio
Digitalsystem:computer,calculator AnalogandDigitalsystem:handphone,digitalTV
DrMichaelTan,[email protected]
Advantagesofdigitalsystem
a) Easiertodesignb) Informationstorageiseasyc) Accuracyandprecisionareeasiertomaintaind) Operationcanbeprogrammede) Lessaffectedbynoisef) MoredigitalcircuitrycanbefabricatedonIC
chips
DrMichaelTan,[email protected]
a)Easiertodesign
Thereareonlytwodifferentvoltagelevels tobeconsideredinthedigitalsystem.
HIGHorLOW0V
0.8V
2.0V
5.0V
DrMichaelTan,[email protected]
22
b)Informationstorageiseasy
Canbekeptaslongasnecessaryindigitalmemory.
Canbestoredmorecompactly.
Cassette player cassette
CD player CD
DrMichaelTan,[email protected]
c)Accuracyandprecisioneasiertomaintain Thedigitalinformationdoesnotdeteriorateonceitisstored.
Theanaloginformationmaybedistortedbytheeffectoftemperature,humidityetc.
DrMichaelTan,[email protected]
d)Operationcanbeprogrammed
Itiseasytoprogramtheoperationofthedigitalsystem.
Theoperationsintheanalogsystemarecomplex,difficulttoprogram.
DrMichaelTan,[email protected]
e)Lessaffectedbynoise
Theexactvoltageisnotimportantinthedigitalsystem.
Usinghigh/lowcomparisons,and0and1bits.
DrMichaelTan,[email protected]
e)Moredigitalcircuitcanbefabricatedonchips Analogcomponentslike highvaluecapacitors, precisionresistors, inductorsand transformers
cannotbeeconomicallyintegrated.
DrMichaelTan,[email protected]
LimitationsofDigitalSystem
Therealworldisanalog Processingdigitizedsignalstakestime
Memory
Mic
ADC DSP DAC
Speaker
DrMichaelTan,[email protected]
Review
Defineanalog,digital Explainthedifferencebetweenadigitalquantityandananalogquantity
Giveanexampleofanalogsystemandonethatisacombinationofbothdigitalandanalog
Statetwoadvantagesofadigitalsystemcomparedtoanalog