Principles of Digital Electronics

Contents

1. Number Systems and Digital Codes

1. Introduction

2. Decimal Number System

3. Binary Number System

3.1 Binary to Decimal Conversion

3.2 Decimal to Binary Conversion

4. Octal Number System

4.1 Decimal to Octal Conversion

4.2 Octal to Decimal Conversion

5. Octal to Binary Conversion

5.1 Binary to Octal Conversion

6. Hexadecimal Number System

6.1 Decimal to Hex Conversion

6.2 Hex to Decimal Conversion

6.3 Hex to Binary Conversion

6.4 Binary to Hex Conversion

6.5 Hex to Octal and Octal to Hex Conversion

7. Signed Number Representations

8. Binary Addition and Binary Subtraction using 2’s Complement

8.1 Binary Addition

8.2 Binary Subtraction

8.3 Subtraction using 1’s Complement

8.4 Subtraction using 2’s Complement

9. Weighted and Unweighted Codes

9.1 BCD Code (Weighted Code)

10. Excess – 3 Code

11. Gray Code (Unweighted Code)

11.1 Binary to Gray Conversion

11.2 Gray to Binary Conversion

12. Alphanumeric Representation

12.1 ASCII Code

2. Logic Gates

1. Logic Gates

1.1 Concept of Positive and Negative Logic

2. Basic Logic Gates

2.1 OR Gate

2.2 AND Gate

2.3 NOT Gate (Inverter Gate)

3. Derived Logic Gates

3.1 NOR Gate

3.2 NAND Gate

3.3 EX – OR Gate

3.4 EX – NOR Gate

4. Universal Gates

3. Logic Families

1. Introduction to CMOS and TTL Logic Families

1.1 Classification of Logic Families

1.2 Parameters of Logic Families

3. TTL Basic Gate, 2 Input TTL NAND Gate

4. CMOS Logic Family

4.1 CMOS NOT Gate

4. Boolean Algebra

1. Boolean Algebra Rules and Boolean Laws

1.1 Boolean Algebra Laws

1.2 Proofs of Some Laws

1.3 Boolean Algebra and Identities

2. De – Morgan’s Theorems

2.1 De Morgan’s 1st Theorem

2.2 De Morgan’s 2nd Theorem

3. Boolean Expression in SOP and POS Form, Min Term and Max Term

4. Conversion of SOP/POS Expression to its Standard SOP/POS Forms

4.1 SOP Boolean Expression

4.2 POS Boolean Expression

5. Introduction to Karnaugh Map

1. Introduction

2. Digital Designing using K-Map for: Gray to Binary and Binary to Gray Conversion

2.1 3 Bit Binary to Gray Converter

2.2 3 Bit Gray Code to Binary Converter

3. Parity Generator and Parity Checking

3.1 EXOR Gates as Parity Checker

6. Combinational Circuits

1. Introduction to Arithmetic Circuits

2. Half Adder

3. Full Adder

4. Half Subtractor

5. Full Subtractor

6. 4-bit Parallel Adder

7. Universal Adder – Subtractor

8. Digital Comparator

9. Introduction to ALU

10. Introduction to Combinational Circuits

11. Multiplexers

11.1 2 to 1 Multiplexer

11.2 4 to 1 Multiplexer

11.3 Tree Multiplexing

11.4 Multiplexer ICs

11.5 Multiplexer Applications

12. Demultiplexers

12.1 1 to 2 Demultiplexer using AND gates without strobe

12.2 1 to 4 Demultiplexer using AND gates without strobe

12.3 1 to 4 Demultiplexer using NAND gates with strobe

12.4 Demultiplexer ICs

12.5 Demultiplexer Applications

13. Encoders

13.1 Decimal to BCD/Binary Encoder

13.2 3 x 4 Matrix Keyboard Encoder

13.3 Priority Encoder IC 74148

14. Decoders

14.1 BCD to Decimal Decoder

14.2 BCD to 7 Segment Decoder