Abstract: An interface device between a user and a CPU or a network terminal, e.g. a microcomputer keyboard or a game console accessory, includes control apparatus such as keys provided on the top surface of a housing and at least two buttons on each of the two side surfaces of the keyboard, the buttons being connected to the connections of certain keys. The keyboard may also be provided with supporting areas on both front corners and on the front edge of the top side, with a microswitch being provided beneath each of the areas and connected in parallel to any one of the keys on the keyboard.