Categories

CMOS Gate Circuitry

Textbook

Up until this point, our analysis of transistor logic circuits has…

Ring Counters

Textbook

If the output of a shift register is fed back to the input. a ring…

Basic Gate Function

Textbook

Parts and Materials 4011 quad NAND gate (Radio Shack catalog #…

Digital Logic Functions

Textbook

We can construct a simple logic functions for our hypothetical lamp…

The S-R Latch

Textbook

A bistable multivibrator has two stable states, as indicated by the…

NAND Gate S-R Flip-Flop

Textbook

PARTS AND MATERIALS 4011 quad NAND gate (Radio Shack catalog #…

Logic Simplification With Karnaugh Maps

Textbook

The logic simplification examples that we have done so far could have…

Multiple-input Gates

Textbook

The Use of Logic Gate Inverters and buffers exhaust the possibilities…

The NOT Gate

Textbook

The single-transistor inverter circuit illustrated earlier is actually…

LED Sequencer

Textbook

PARTS AND MATERIALS 4017 decade counter/divider (Radio Shack catalog…

Basic Logic Gate Troubleshooting

Worksheets - Discrete Logic

Counting practice: count from zero to thirty-one in binary, octal, and…

High-Reliability Circuits

Worksheets - Discrete Logic

Don’t just sit there! Build something!! Learning to analyze relay…

Fail-safe Design

Textbook

Logic circuits, whether comprised of electromechanical relays or…

Half-Adder

Textbook

As a first example of useful combinational logic, let’s build a…

Gate Universality

Textbook

NAND and NOR gates possess a special property: they are universal.…

Converting Truth Tables into Boolean Expressions

Textbook

In designing digital circuits, the designer often begins with a truth…

A Binary Adder

Textbook

Suppose we wanted to build a device that could add two binary bits…

Karnaugh Maps, Truth Tables, and Boolean Expressions

Textbook

Who Developed the Karnaugh Map? Maurice Karnaugh, a…

Boolean Algebra

Worksheets - Discrete Logic

Don’t just sit there! Build something!! Learning to analyze digital…

CMOS Logic Gates

Worksheets - Discrete Logic

Counting practice: count from zero to thirty-one in binary, octal, and…

Binary Overflow

Textbook

One caveat with signed binary numbers is that of overflow, where the…

Introduction to Boolean Algebra

Textbook

Mathematical rules are based on the defining limits we place on the…

Why digital?

Textbook

Although many textbooks provide good introductions to digital memory…

Finite-state Machine

Textbook

Feedback is a fascinating engineering principle. It can turn a rather…

Introduction to Karnaugh Mapping

Textbook

Why learn about Karnaugh maps? The Karnaugh map, like Boolean…

The “Buffer” Gate

Textbook

If we were to connect two inverter gates together so that the output…

Logic Signal Voltage Levels

Textbook

Input Voltages for Logic Gates Logic gate circuits are designed to…

Shift Registers: Serial-in, Serial-out

Textbook

Serial-in, serial-out shift registers delay data by one clock time for…

Circuit Simplification Examples

Textbook

Let’s begin with a semiconductor gate circuit in need of…

“Ladder” Diagrams

Textbook

Ladder diagrams are specialized schematics commonly used to document…

Historical, Nonmechanical Memory Technologies

Textbook

Perhaps the most ingenious technique was that of the delay line. A…

Boolean Relationships on Venn Diagrams

Textbook

The fourth example has A partially overlapping B. Though, we will…

Converting Truth Tables into Boolean Expressions

Textbook

In designing digital circuits, the designer often begins with a truth…

Decoder

Textbook

A decoder is a circuit that changes a code into a set of signals. It…

The Exclusive-OR Function: The XOR Gate

Textbook

What Is an XOR Gate? One element conspicuously missing from the set of…

Performance-Based Assessments for Digital Circuit Competencies

Worksheets - Discrete Logic

(Template)

Practical Considerations of ADC Circuits

Textbook

Perhaps the most important consideration of an ADC is its resolution.…

NOR Gate S-R Latch

Textbook

PARTS AND MATERIALS 4001 quad NOR gate (Radio Shack catalog #…

Binary Subtraction

Textbook

We can subtract one binary number from another by using the standard…

Boolean Algebra

Worksheets - Discrete Logic

Don’t just sit there! Build something!! Learning to analyze digital…

Averager and Summer Circuits

Textbook

If we take three equal resistors and connect one end of each to a…

CMOS 555 Long Duration Flyback LED Flasher

Textbook

PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…

Octal and Hexadecimal Numeration

Textbook

Because binary numeration requires so many bits to represent…

Using Multiple Combinational Circuits

Textbook

As an example of using several circuits together, we are going to make…

Basic Electromagnetic Relays

Worksheets - Discrete Logic

Don’t just sit there! Build something!! Learning to analyze relay…

BJT Amplifier Troubleshooting

Worksheets - Discrete Logic

As an instructor of electronics, I am called upon frequently to help…

Contact “Bounce”

Textbook

When a switch is actuated and contacts touch one another under the…

Asynchronous Counters

Textbook

In the previous section, we saw a circuit using one J-K flip-flop that…

Broadside Coupled Trace Inductance Calculator

Tools

This calculator helps you compute the inductance of a broadside coupled trace.

Circuits and the Speed of Light

Textbook

Suppose we had a simple one-battery, one-lamp circuit controlled by a…

Protective Relays

Textbook

A special type of relay is one that monitors the current, voltage,…

Look-up Tables

Textbook

Having learned about digital memory devices in the last chapter, we…

Series and Parallel Capacitors

Textbook

When capacitors are connected in series, the total capacitance is…

Waveguides

Textbook

A waveguide is a special form of transmission line consisting of a…

Junction Field-effect Transistors

Textbook

The field effect transistor was proposed by Julius Lilienfeld in US…

Optothyristors

Textbook

Like bipolar transistors, SCRs and TRIACs are also manufactured as…

Power Sources

Textbook

There are many different types of power sources, and here some of the…

Class B Audio Amplifier

Textbook

PARTS AND MATERIALS Four 6 volt batteries Dual operational amplifier,…

Contributors (6)

Textbook

Contributors to this chapter are listed in chronological order of…

Torque Conversion Calculator

Tools

A tool designed to convert between units of torque