Switch
A switch is a device for changing the
course (or
flow) of a
circuit. The prototypical model is a mechanical device (for example a
railroad switch) which can be disconnected from one course and connected to another. The term "switch" typically refers to
electrical power or electronic
telecommunication circuits. In applications where multiple switching options are required (e.g., a
telephone service), mechanical switches have long been replaced by electronic variants which can be intelligently controlled and automated.
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Switch (disambiguation)