An expandable controller for a video game machine. The expandable controller is connectable in series to a control deck of a video game machine. The expandable controller includes a keypad. A plurality of key-switches of the keypad generates key-pressed status signals corresponding to key-pressed status...http://www.google.fr/patents/US5653637?utm_source=gb-gplus-shareBrevet US5653637 - Expandable controllers capable of connecting in series to a control deck of a video game machine
Expandable controllers capable of connecting in series to a control deck of ...
