ABSTRACT
Switches come in many shapes and sizes, such that the same electrical functionality may be achieved using a wide variety of physically different devices. An individual switch might control any number of separate things simultaneously. Naturally a switch pole can be used in either a one-to-many or a many-to-one configuration. A light switch and a doorbell would both most commonly use an spst switch. A latching switch remains in its current position until it is switched to a new position by the user. The keys on a keyboard are going to be momentary switches while the routing buttons on a console will be latching. A single throw momentary style switch can act either as an open switch which is closed when pressed, or a closed switch which is opened when pressed. A switch which is closed when pressed and is otherwise open will be referred to as ‘Push-to-Make’ or ‘Normally Open’.
