1. An array of pushbutton switches including a plate of springy material having integral dome-shaped projections thereon which provide the pushbutton, each of the projections being such that, when the plate is held substantially rigid, pressure on the dome causes a snap-action deformation thereof and the deformed material resumes its original shape with a snap action on release of the pressure, a plate of insulating material carrying a set of fixed contacts in positions corresponding to the pushbuttons, a further plate carrying a set of movable contacts, at least one for each pushbutton and each resiliently biased against displacement, a mechanical coupling member for each pushbutton coupling it to its movable contact or contacts, means for locating the movable contacts with respect to their corresponding pushbuttons and means for clamping the assembly of plates and locating means together, the arrangement being such that when a dome is snapped into is deformed condition its associated movable contact, or each of them, is carried from its normal to its operated condition with respect to one or more of the fixed contacts.