CONTROLLER AND EXTENSION UNIT FOR CONTROLLER

摘要

A controller is connectable to an electronic device for a game and transmits instruction signals to the electronic device in response to a user's operation. The upper surface (510a) of the controller has a plurality of command buttons (520) and a discrete direction key (518) providing signals indicative of a plurality of prescribed discrete directions such as "up", "down", "left" and "right". The upper surface (510a) of the controller further includes an arbitrary direction key (518) arranged so as to provide signals indicative of arbitrary directions over 360 degrees. The arbitrary direction key (518) is disposed such that, when the controller is held by a user with both hands, both of the said discrete direction key (518) and the said arbitrary direction key (518) are manipulated by the thumb of the user's left hand and the plurality of command buttons (520) are manipulated by the thumb of the user's right hand.