Push-button
push-button used to control the flow of current in an electrical circuit
A push-button is a switch in the shape of a small button or knob. When it is pushed it completes an electrical circuit that controls something.[1] For example, a doorbell rings when a person pushes a button, or numbers are displayed on a calculator or even when you are playing a machine game at an arcade.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Push_Button_Light_Switch.jpg/220px-Push_Button_Light_Switch.jpg)
References
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