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.

Learners examine the characteristics of a sine wave and the various ways to describe it including Vp, Vp-p, Vrms, Vavg, and frequency.

Identifies the parts of the hydraulic press brake featuring the Adira up-acting press brake. Interactive section asks to identify parts after first learning them.

Learners examine the fundamentals of a pulse train. Concepts such as time on, time off, duty cycle, period, and frequency are covered.

Learners read how an inductor opposes a current change when it begins to energize and when it begins to de-energize. A short quiz completes the activity.

Students read how to determine the total impedance of a parallel circuit using complex numbers. The "J" term is used in the calculations.

Students solve six problems for series impedance using complex numbers. Immediate feedback is given.

Students work six practice problems to determine the total impedance of a parallel circuit.

Students follow the steps for finding the total impedance for a series-parallel circuit. Several examples are given.

Basic Internet concepts for kids

Converting hexadecimal, binary and decimal numbers.

Digital Divide - Internet and Net Geners of the Net generation.