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Digital Logic Systems – Volume III

Lee Layton, P.E.


Course Outline

The course begins by covering two more fundamental logic gates: the Exclusive OR and the Exclusive NOR gate.  From there we cover circuits that can be used to add and subtract numbers.  The following chapter covers the basics of Flip-flop circuits including R-S, J-K, T, and D Flip-flops.  Counters, registers, and clock circuits are also covered.

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

Learning Objective

After taking this course you should:

Intended Audience

This course is intended for electrical engineers and others who want to understand how digital computer logic systems work.

Benefit to Attendees

This third course in the series on digital computer logic expands on what we learned in volumes I and II to actually design circuits to add, subtract, and store numbers.  The information gained from this course, along with Volumes I and II, will give you a good understanding of how to design a digital logic circuit.

Course Introduction

This is the third course in a series of three courses on digital logic circuits.  In Digital Logic Circuits, Volume II, Fundamental Logic Circuits, we studied the four basic logic gates that make up the foundation for digital equipment and looked at the types of logic that are used in equipment to accomplish the desired results. 

Digital equipment must be capable of many more operations than those described in volume II of this series.  Provisions must be made for accepting information; performing arithmetic or logic operations; and transferring, storing, and outputting information. Timing circuits are included to ensure that all operations occur at the proper time.

In this course we will study the logic circuits used to perform the operations mentioned above.  This includes Exclusive OR/NOR Gates, adders, flip-flop circuits, clocks, counters and registers.  The first chapter explains the operation of the Exclusive OR gates and the Exclusive NOR gates in detail.

Course Content

This course content is in the following PDF document:

Digital Logic Systems – Volume III

Please click on the above underlined hypertext to view, download or print the document for your study. Because of the large file size, we recommend that you first save the file to your computer by right clicking the mouse and choosing "Save Target As ...", and then open the file in Adobe Acrobat Reader. If you still experience any difficulty in downloading or opening this file, you may need to close some applications or reboot your computer to free up some memory.

Course Summary

Now that you have completed this course, you should have a basic understanding of the more common special logic circuits.  With just these basic components and ideas you can design an unlimited number of circuit applications.

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.