Introduction to Digital Logic

John Tuman, P.E.

Course Outline

This two PDH credit class provides a primer in digital logic design.  Although most modern logic design in now achieved with computerized methods this course covers the essential building blocks upon which modern techniques were developed.  The class introduces the core logical operations and demonstrates elementary methods to design logic circuits to achieve a desired function.  The course also examines the key differences between CMOS and TTL technologies and covers basic design principles.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.

Learning Objective

At the conclusion of this course, the student will:

• Understand AND, NOT, NAND, OR, NOR, XOR, XNOR operations, schematic symbols and truth tables;
• Determine the output of a combinational digital logic circuit for given inputs;
• Develop a digital circuit from a simple Boolean expression or truth table;
• Understand how to use a timing diagram to examine the behavior of a digital logic circuit;
• Understand key differences between TTL and CMOS;
• Understand power dissipation and switching speed characteristics of CMOS and TTL;
• Recognize common TTL and CMOS family and sub-family identifiers;
• Be familiar with propagation delay, fan-out, & TTL input & output voltage thresholds; and
• Appreciate how the introduced concepts can be applied to solve common problems like binary addition.

Intended Audience

This course provides a concise overview of digital logic design.   For those already familiar with logic design the course will serve as review, for those new to the topic the course will serve as an introduction.  This course has no prerequisite class; however a basic understanding of Boolean algebra may be helpful.

Benefit to Attendees

Attendee of this course will be able to develop simple logic circuits to achieve a designed logical operation. The attendee will recognize schematic representations of logical operators and be able to identify integrated circuit types and logic family and sub-family types by their identifying numbers. The attendee will achieve a basic appreciation for fundamental design concepts like propagation delay, fan-out and power dissipation.

Course Introduction

Implementation of logic circuits has evolved over many years, from its origins in open and closed mechanical contacts, to RTL & DTL to the modern BiCMOS, however regardless of technology the underlying logic remains the same.  This course will examine perhaps the two most common forms of digital logic technologies TTL and CMOS.  The course will introduce basic logic operators and build upon the information to demonstrate how digital logic can be used to accomplish simple but important tasks like binary addition and parity generation.

Course Content

In this lesson, you are required to download and study the following course content in PDF format:

Course Summary

The course was written as to provide a review of essential digital logic design in two hours or less. Therefore the Course material is presented in a concise manner suitable for the online PDH achievement regardless of engineering discipline.

Quiz

Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.

DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of PDH Center or any other person/organization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered architect and/or professional engineer/surveyor. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.