Digital electronics and Logic design

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Digital electronics and Logic design

Introduction

Digital electronics and Logic design

    Digital electronics is essential to understanding the design and working of a wide range of applications, from consumer and industrial electronics to communications; from embedded systems, and computers to security and military equipment. As the devices used in these applications decrease in size and employ more complex technology, it is essential for engineers and students to fully understand both the fundamentals and also the implementation and application principles of digital electronics, devices and integrated circuits, thus enabling them to use the most appropriate and effective technique to suit their technical needs.

What is Multiplexer?

    It is a combinational circuit which have many data inputs and single output depending on control or select inputs.​ For N input lines, log n (base2) selection lines, or we can say that for 2n input lines, n selection lines are required. Multiplexers are also known as “Data n selector, parallel to serial convertor, many to one circuit, universal logic circuit​”. Multiplexers are mainly used to increase amount of the data that can be sent over the network within certain amount of time and bandwidth.

An Introduction to Microprocessor 8085

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Table of contents

1 Number Systems

1.1 Analogue Versus Digital\1.2 Introduction to Number Systems

1.3 Decimal Number System

1.4 Binary Number System

1.5 Octal Number System

1.6 Hexadecimal Number System

1.7 Number Systems – Some Common Terms

1.8 Number Representation in Binary

1.9 Finding the Decimal Equivalent

1.10 Decimal-to-Binary Conversion

2 Binary Codes

2.1 Binary Coded Decimal

2.2 Excess-3 Code

2.3 Gray Code

2.4 Alphanumeric Codes

2.5 Seven-segment Display Code 

2.6 Error Detection and Correction Codes

3 Digital Arithmetic

3.1 Basic Rules of Binary Addition and Subtraction 

3.2 Addition of Larger-Bit Binary Numbers 

3.3 Subtraction of Larger-Bit Binary Numbers 

3.4 BCD Addition and Subtraction in Excess-3 Code 

3.5 Binary Multiplication 

3.6 Binary Division 

3.7 Floating-Point Arithmetic

4 Logic Gates and Related Devices 

4.1 Positive and Negative Logic 

4.2 Truth Table 

4.3 Logic Gates

4.4 Universal Gates 

4.5 Gates with Open Collector/Drain Outputs 

4.6 Tristate Logic Gates 

4.7 AND-OR-INVERT Gates 

4.8 Schmitt Gates 

4.9 Special Output Gates 

4.10 Fan-Out of Logic Gates 

4.11 Buffers and Transceivers 

4.12 IEEE/ANSI Standard Symbols

5 Logic Families 

5.1 Logic Families – Significance and Types 

5.2 Characteristic Parameters 

5.3 Transistor Transistor Logic (TTL)

5.4 Emitter Coupled Logic (ECL)

5.5 CMOS Logic Family 

5.6 BiCMOS 

5.7 NMOS and PMOS Logic 

5.8 Integrated Injection Logic (I2L) Family 

5.9 Comparison of Different Logic Families 

5.10 Guidelines to Using TTL Devices 

5.11 Guidelines to Handling and Using CMOS Devices 

5.12 Interfacing with Different Logic Families

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