摘要 |
<p>The device (1) has primary and secondary control elements (5A, 5B) arranged on a base (3) and displaced by predefined movements for navigation in primary and secondary menus, respectively. A display unit (7) e.g. LCD screen, common to the control elements displays the menus corresponding to primary and secondary functional groups. An escaping control unit (9) e.g. actuation key, common to the control elements controls return of the menus to a previous level.</p> |