A physical keyboard that uses an individual spring and switch for each key. Today, only premium keyboards are built with key switches; however, they were also used in the past, such as in the Model M keyboard from IBM, which used buckling spring switches. Mechanical keyboards are very much appreciated by fast typists because they have a springiness and feel that is not the same as the low-cost membrane keyboard accompanying most computers. Types of Mechanical Switches CHERRY key switches are commonly used today, while Alps and other types were used in the past. Buckling spring key switches cause the spring to buckle outwards rather than compress downwards, providing a unique tactile feedback. See premium keyboard and membrane keyboard.