DIRECTIONAL CLICKABLE TRACKBALL

摘要

A multi-function navigation device in the form of a trackball that is both rotationally actuable and multi-directionally clickable. The multi-function navigation device can receive user commands by rotational movement and various directional clicking of the trackball. Directional depression of the multi-function navigation device activates switches corresponding to predetermined directions to effectuate directional selections or directional movements of a cursor for navigating the display of an electronic device.