By Patrick Hoppe
Learners examine the Karnaugh map for a three-variable system. Several examples are given.
Boolean Theorems (Single Variable)
Students analyze the eight single variable Boolean theorems and their expressions.
Digital Circuit Devices
By Terry Bartelt
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 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 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.
Hexadecimal Numbering System
In this learning activity you'll review the hexadecimal numbering system.
Analog and Digital Converters
In this learning activity you'll examine how electronic converters convert between analog voltages and proportional digital signals.
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.
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.
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.
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.
Synchronous & Asynchronous Inputs on a JK Flip-Flop
Students examine the operation of synchronous and asynchronous inputs on a JK Flip-Flop.
The MOD Number
Learners read how to calculate the MOD number and how it is used.
The MOD 10 Counter
The technique for designing a MOD 10 counter is introduced. Asynchronous inputs of a JK flip-flop are used to clear the counter.
Comparing Analog and Digital Signals
Learners compare animations of analog and digital data signals. A short quiz completes the activity.
Students look at the power dissipated by a single gate and by an IC. The concept of average current draw is introduced and examples are provided.
The Operation of a Multiplexer/Demultiplexer Circuit
In this animated object, learners examine how a multiplexer and a demultiplexer work together when their data select lines are connected to the same binary counter.
The 4-Input Truth Table
In this learning activity you'll practice using the 4-input truth table.
In this learning activity you'll explore the operation of a NAND gate using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.
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.
Troubleshooting a Digital-to-Analog Converter
Learners read an explanation of how to troubleshoot a faulty digital-to-analog converter that has a shorted input.
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.
Logic State Indicators
Instructions on how to interpret state indicator symbols for input and output terminals of digital devices is presented.
Development of a Boolean Expression for a Combinational Logic Circuit
Learners view an animated demonstration of how to determine the final output of the combinational circuit.
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.