Mechanical keyboard switches are physical mechanisms under each key of a mechanical keyboard that detect when the key is pressed down. There are three types of mechanical keyboard switches: linear switches, tactile switches and clicky switches.

The three types of switches can be distinguished by their motion and feedback. Linear switches have a uniform and smooth motion, resulting in a quiet and seamless typing experience. Tactile switches offer more tactile feedback as the key lightly resists the press for a firmer feel. Clicky switches give the most feedback, offering a distinct "click-like" sound and a snappy key movement.
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