Push Switches

Switches are really simple components. When you press a button or flip a lever, they connect two contacts together so that electricity can flow through them.

The little tactile switches that are used in this lesson have four connections, which can be a little confusing.

Actually, there are only really two electrical connections, as inside the switch package pins B and C are connected together, as are A and D.

This guide was first published on Dec 05, 2012. It was last updated on Dec 05, 2012. This page (Push Switches) was last updated on Aug 19, 2019.