Abstract: A computer input device having multiple multi-directional detection devices that can be simultaneously operated by a user to provide multi-dimensional input to a computer is disclosed. The multi-directional detection devices are arranged on an input device housing to facilitate simultaneous operation by one hand of an operator. One multi-directional detection device may include a spherical ball located within the housing and protruding from a bottom surface of the housing so that when the housing is located on a horizontal surface and moved about, that ball rotates within the housing. Encoders detect the rotation of the ball and provide an indicative signal to circuitry located within the housing. Another multi-directional detection device may include a spherical ball located within the housing and protruding from a top surface of the housing. Encoders detect rotation of this ball and provide indicative signals to the circuitry.