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

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.

Learners compare animations of analog and digital data signals. A short quiz completes the activity.

Learners read an analogy comparing mechanical work (in this case, sliding a weight) to that of electrical power. The relationship of work, apparent work, and power factor is developed.

In this learning activity we’ll learn how the web works by using a Request and Response algorithm.

Users read work instructions and view a drawing and calculations for turning on a lathe using a digital readout.

In this learning activity you'll explore how computers connected on a network use Ethernet technology.

In this interactive object, learners examine how work is performed in foot-pounds by a hydraulic system that uses a pump and cylinder. A brief quiz completes the activity.

Learners read an explanation of how to troubleshoot a faulty digital-to-analog converter that has a shorted input.

Learners examine how CEC, base saturation, and soil pH work with each other to define plant nutrient availability.

Learners follow procedures for measuring resistance using an analog ohmmeter. They examine the use of the Function Switch and the Range Switch and practice reading a non-linear scale. A brief quiz completes the activity.

In this animated object, learners examine a closed-loop feedback system that uses digital circuits to control the position of a gear rack.

In this learning activity you'll explore the functions and proper operation of a digital multimeter.

In this animated object, learners follow an analogy of water flowing through pipes and valves to see how current increases in a parallel circuit as branches are added.

Students view the layout and operation of a digital logic probe.

Students examine the procedure to measure current with an analog ammeter. The use of Function and Range switches is explored along with reading the needle position on the meter scale. A brief quiz completes the activity.

In this learning activity you'll learn what Zip files are, their origins, and how to work with them in Windows.

Learners examine the electronic components of a digital thermometer.

Learners examine the formulas for calculating work in ft-lb units and power in ft-lb/min. units.

In this animated object, learners examine an analog closed-loop feedback system that uses potentiometers to control the position of a gear rack.