Discussion of what it means for electrical elements to be in parallel.

Circuits Electrical Parallel

An explanation of what an open circuit is.

Circuits

An explanation of what a short circuit is.

Circuits

Discussion of how a resistor can either be used as a pull-up resistor or a pull-down resistor to tie a node in a circuit to a known voltage.

Circuits Resistance

Discussion of the need to use resistors to limit the current in certain circuits.

Circuits Current Resistance

A comparator is any circuit whose output will assert when an input signal rises above a given threshold, and de-assert when the input falls back below the threshold.

Circuits Comparator

Voltage dividers are commonly used circuits that split an applied overall voltage into a smaller desired voltage level.

Circuits Voltage

This topic page describes how you can set up a multi-button input circuit.

Circuits Button Inputs

This topic provides background information on diode protection circuits.

Circuits Diodes