Input devices and their use

On a IACK a keyboard and a bottom; and a pressure-sensitive device array, which is arranged to the response to form the connected to a keyboard operation, is arranged above the bottom pliable a hard to break covering layer, a exposing face, a defined an independent areas key array; and combined key area of the gap between adjacent independent button areas; twoWith a separable contact element array, and bottom the extending between the covering layer and separation from the bottom the covering layer.