主权项 |
1. A handheld device, comprising:
a plurality of display units forming a first portion of the handheld device; and a plurality of input devices forming a second portion of the handheld device, wherein data provided by each of the plurality of input devices determines, at least in part, output displayed on a corresponding one of the plurality of display units; wherein the handheld device is operative in at least a first configuration and a second configuration, at least one display unit having a display screen that is concealed in the first configuration and at least two of the plurality of display units having respective display screens that are at least partially visible from a same external viewing location in the second configuration; wherein at least a first display unit of the plurality of display units is connected to at least a second display unit of the plurality of display units by a hinge, which is coupled to and supports the second portion of the handheld device, the hinge comprising: a central section, which is coupled to and supports the first display unit and at least a first input device of the plurality of input devices; and at least one extendable section, which is coupled to and supports the at least second display unit and at least a second input device of the plurality of input devices; thereby permitting the at least second display unit to independently extend and retract one of in front of and behind the first display unit. |