A rocker switch is any switch turns off or on by “rocking” the switch from the 0 (Off) to the 1 (On) position. The rocker switch symbols represent the 0 and 1 used in binary, the language of computers. The picture shows an example of a typical rocker switch found on a computer power supply. A rocker switch may also be on external hard drives, computer monitors, surge protectors, and other computer peripherals.
Hardware terms, Switch
