Digital Electronics - Chapter 0: Introduction of Digital Electronics - Dr Le Dung

Digital Electronics
Dr. Lê Dũng
Department of Electronics and Computer System (C9-401)
School of Electronics and Telecommunications
Hanoi University of Science and Technology
Email: ledung-fet@mail.hut.edu.vn
Introduction of Digital Electronics
Chapter 0
1. What is the “Digital Electronics”
¾ Digital Techniques
¾ Digital Electronics
¾ Advantages and Limitations
2. Introduction of the course “Digital Electronics” 
¾ Overview 
¾ Goal
¾ Contents
¾ Books of Reference and Software Tools
¾ Experiments and Examination
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1. What is the “Digital Electronics”
¾ Analog signal and Analog system 
Analog ÅÆ Continuous
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¾ Information Digitalization with 3 steps:
1. Sampling 2. Quantization 3. Coding 
0000
0100
0101
0100
0011
0100
0110
0111
0101
0011
0011
0100
0100
Digital signal 
noise
9 Nyquist–Shannon 
sampling theorem
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1. What is the “Digital Electronics”
Digital ÅÆ Discrete
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¾ Digital system 
1. What is the “Digital Electronics”
{ 0, 1 }
{True, False} 
{ 0, 1 } 
Digital Circuits
(or Digital Logic 
Circuits)
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1. What is the “Digital Electronics”
Digital Techniques
Digital Electronics
(ADC, Digital Information Processing, DAC)
(Digital Logic Circuits)
• Advantages of Digital Electronics
+ Digital systems are generally easier to design
+ Information storage is easy
+ Precision is greater
+ Operation can be programmed
+ Digital circuits are less affected by noise
+ More digital circuitry can be fabricated on IC chips 
• Limitations
- Real world is mainly analog, so ADC and DAC 
are required.
1. What is the “Digital Electronics”
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2.Introduction of the course “Digital Electronics”
Boolean 
Functions
(Boolean Algebra)
True
False
1
0
High
Low
Basic Logic Gates
Inverter,AND,OR,NAND,NOR,XOR,XNOR
Electronic circuits
(Transistor BJT, Diot, 
Resister, MOS...) Implementation 
Digital System
Digital 
Integrated 
Circuits
Information Digitalization
Logic LevelLogic Clause
Sequential 
Circuits
Combinational 
Circuits
Logic Circuits
Analysis & 
Synthesis
- Custom design 
- Standard cell 
design
- Gate array
- PLA, PLD, FPGA
- FSMD design
- VHDL
Logic Families
RTL, DTL, HTL
TTL, CMOS
PMOS, NMOS, 
BiMOS, ECL,
Specifications:
- Current & Voltages
- Fan-in, Fan-out
- Propagation Delay
- Noise Margin
- Power Dissipation
- Speed Power Product
Open-Collector
Output
&
Tristate Output 
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¾ Overview
Æ Give insight in the design of digital electronic systems
at the gate level and register-transfer level (RTL).
ÆAfter this course, the students can design and
analysis two kinds of digital logic circuits :
Combinational Logic Circuits and Sequential Logic
Circuits. They also understand and apply all basic
modular logic circuits (in IC) to a digital system.
Æ Introduction some modern design tools
2.Introduction of the course “Digital Electronics”
¾ The Goal of the Cource
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¾ Contents of the Course
Part I: Digital Principles
Part II: Combinational Circuits
(Machine without status) 
Part III: Sequential Circuits
(Machine with status) 
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2.Introduction of the course “Digital Electronics”
1. “Digital Electronics” 
Roger L. Tokheim 4th Edition. – 1994
2. “Digital Logic Circuit Analysis & Design” 
Victor P. Nelson , H. Troy Nagle, Bill D. Carroll, David Irwin. – 1995
3. “Digital Systems – Principles and Application”
Ronald J. Tocci and Neal S. Widmer - 2001
4. “VHDL: Programming by Examples” 
Douglas L. Perry, 4th Edition - 2002.
5. “Điện tử số” 
PGS. Ts. Đặng Văn Chuyết
6. “Toán logic và Kỹ thuật số” 
Ts. Nguyễn Nam Quân -2006 
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¾ Books of Reference
2.Introduction of the course “Digital Electronics”
• Circuit Maker 2000
• Proteus Professional
• Quartus II Web Edition Software
(https://www.altera.com/download/software/quartus-ii-we)
• ISE® WebPACK™ design software
(
¾ Software Tools
2.Introduction of the course “Digital Electronics”
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Exp 1: Basic logic gates, Logic levels, Mux/Demux
Exp 2: RS Latch, JK – Flip Flop, Counter and 7 Segment Led
Exp 3: Introduction a software for designing the digital circuit
Exp 4: Design a 3- bits comparator
Exp 5: Design a sequential logic circuit.
¾ Experiments
2.Introduction of the course “Digital Electronics”
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• Midterm exam: 30% 
• Final exam: 70%
Æ Completing lab sessions is a must before taking the exam
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¾ Examination
2.Introduction of the course “Digital Electronics”
• Attend all lessons
• Using a open-notebooks
• Doing home works
• Reading the references
• Trying make the questions and answers the 
question from the lecturer 
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How to learn this course effectively ?.