Explanation:
3 types of switches:
Mechanical switches
Mechanical switches must be activated physically, by moving, pressing, releasing, or touching its contacts.
Electronic switches
Electronic switches do not require any physical contact in order to control a circuit. These are activated by semiconductor action.
Mechanical Switches
Mechanical switches can be classified into different types based on several factors such as method of actuation (manual, limit and process switches), number of contacts (single contact and multi contact switches), number of poles and throws (SPST, DPDT, and SPDT), operation and construction (push button, toggle, rotary, and joystick), based on state (momentary and locked switches).
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