The technique for designing a MOD 10 counter is introduced. Asynchronous inputs of a JK flip-flop are used to clear the counter.

Learners observe how to cascade PLC counters to extend the maximum count of one counter.

In this animated object, learners examine the proper way to reset a counter instruction in a programmable controller.

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.

In this screencast, 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.

Learners study how a DC motor generates counterelectromotive force. A short quiz completes the object.

Learners view an animation of a counterbalance valve in operation and examine the valve’s internal structure.

Learners examine the counter-reset function of a programmable controller and how it is used.

Learners examine the two methods used by programmable logic controllers to perform a counting operation using addition or counter instructions. A brief quiz completes the activity.

In this animated object, learners examine how PLC up/down-counters are used to control an automated parking lot gate.

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

Students read about the basics of using an indicator.

Learners examine the drawing symbols used for counterbore, countersink, spotface, radius, diameter, and depth. In the quiz that completes the activity, they associate these symbols with machining applications.

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.