By Patrick Hoppe
Learners examine the Karnaugh map for a three-variable system. Several examples are given.
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.
Synchronous & Asynchronous Inputs on a JK Flip-Flop
Students examine the operation of synchronous and asynchronous inputs on a JK Flip-Flop.
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 7493 IC Binary Counter
By Terry Bartelt
In this interactive and animated object, learners examine the construction of a 7493 IC as mod-2 and mod-8 up-counters. They view how this binary counter can be modified to operate at different modulus counts. A quiz completes the activity.
Hexadecimal Number Conversion Practice Problems
In this learning activity you'll practice converting between hexadecimal and decimal and between hexadecimal and binary numbers.
Boolean Theorems (Single Variable)
Students analyze the eight single variable Boolean theorems and their expressions.
The 4-Input Truth Table
In this learning activity you'll practice using the 4-input truth table.
The schematic symbols of logic gates used in digital circuits are shown.
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.
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.
Boolean Theorems (Multivariable)
Students read the multivariable theorems and view the graphic depictions of the Boolean expressions.
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.
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.
Cascading Magnitude Comparators
Learners read an explanation of how to connect two 7485 ICs to compare binary numbers by creating an 8-bit comparator. Diagrams and charts are presented.
Building a Binary Counter with a JK Flip-Flop
In this animated activity, learners examine the construction of a binary counter using a JK flip-flop. The ability of the JK flip-flop to "toggle" Q is also viewed.
The MOD Number
Learners read how to calculate the MOD number and how it is used.
In this animated object, learners examine three different types of multivibrators: astable, monostable, and bistable. A brief quiz completes the activity.
Digital Circuit Devices
The two types of digital devices, logic gates and flip-flops, and the types of basic operations they perform are presented.
In this animated activity, learners view the flip-flop and read about its outputs, the information it stores, and its storage conditions. A quiz completes the lesson.
Presetting and Clearing a Flip-Flop
In this animated activity, learners view how to clear and preset a flip-flop to store a logic 0 or a logic 1.
Fan-Out: Determining the Load Drive Capability of an IC
Students follow steps to determine the number of inputs that can be driven by a specific IC. A sample problem is given.
Pulse Train Fundamentals
Learners examine the fundamentals of a pulse train. Concepts such as time on, time off, duty cycle, period, and frequency are covered.
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.
Logic Probe Troubleshooting
In this animated object, learners follow a process for troubleshooting digital integrated circuits on a printed circuit board using a logic probe.