Synchronous & Asynchronous Inputs on a JK Flip-Flop

By Patrick Hoppe

Students examine the operation of synchronous and asynchronous inputs on a JK Flip-Flop.

Logic Symbols

By Terry Bartelt

The schematic symbols of logic gates used in digital circuits are shown.

Karnaugh Maps

Learners examine the Karnaugh map for a three-variable system. Several examples are given.

The 4-Input Truth Table

In this learning activity you'll practice using the 4-input truth table.

A Drill for Converting Binary Numbers to Decimal Numbers

By John Rosz

Students test their skill at converting binary numbers to decimal numbers. Immediate feedback is provided.

AND Gates

In this learning activity you'll describe the operation of an AND gate by using a truth table, a waveform diagram, a Boolean Algebra equation, a switch analogy, and a written definition.

Demultiplexers

In this animated object, learners examine the operation of a demultiplexer along with the data output and select lines. A brief quiz completes the activity.

Boolean Theorems (Single Variable)

Students analyze the eight single variable Boolean theorems and their expressions.

Hexadecimal Number Conversion Practice Problems

In this learning activity you'll practice converting between hexadecimal and decimal and between hexadecimal and binary numbers.

Clock Pulse Triggering of Flip-Flops

This learning object shows the symbols used to represent the type of pulse required at the clock input to activate flip-flops.

Pulse Train Fundamentals: Practice Problem #1

In this interactive object, learners determine the pulse width, period, duty cycle, and frequency of a waveform.

Timing Diagrams

The explanation and use of timing diagrams used in digital electronics to graphically show the operation of various circuits are given.

Logic State Indicators

Instructions on how to interpret state indicator symbols for input and output terminals of digital devices is presented.

Digital-to-Analog Converters

In this animated activity, learners examine how an electronic converter changes digital signals to analog signals. Sections of a synthesizer are identified, and the operation of a D/A converter is demonstrated.

A Sample Exam for Digital Electronics

Students answer 10 questions in a sample exam. This exercise covers number systems, number conversion, logic gates, and combinational design. Feedback is provided.

The MOD Number

Learners read how to calculate the MOD number and how it is used.

Analog and Digital Converters

In this learning activity you'll examine how electronic converters convert between analog voltages and proportional digital signals.

Current and Voltage Parameters of Digital Circuitry

In this interactive learning object, students read about the voltage and current parameters commonly found on a data sheet. A brief quiz completes the activity.

Logic State Signals

In this learning activity you'll identify the voltage levels produced or recognized by digital logic devices as valid or invalid logic state signals.

Boolean Theorems (Multivariable)

Students read the multivariable theorems and view the graphic depictions of the Boolean expressions.

The Open-Collector Logic Device

In this animated object, learners view the operation of an open-collector inverter with and without a pull-up resistor.

Serial-In Serial-Out Shift Register

In this animated activity, students view the operation of a 4-bit serial-in serial-out register. A brief quiz completes the learning object.

Multivibrators

In this animated object, learners examine three different types of multivibrators: astable, monostable, and bistable. A brief quiz completes the activity.

NOR Gates

In this learning activity you'll review the operation of a NOR gate by using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

The Universal NAND Gate

In this animated activity, learners examine how various NAND gate configurations and the logic signals produced throughout the circuit perform the functions of all of the other types of logic gates.