Abstract: A data input apparatus for use with data processing devices is disclosed. The apparatus includes a keyboard base having a plurality of switches, a keyframe, and a plurality of keys arranged on the keyframe. The keyframe mates with the keyboard base, which has circuitry for generating character data associated with the plurality of keys. Moreover, upon mating, the keyframe can engage one or more of the plurality of switches to be uniquely identified according to the arrangement of the plurality of keys on the keyframe.

Abstract: A data input apparatus for data processing devices is disclosed. The apparatus includes a keyboard structure having a plurality of keys disposed within the keyboard structure. Included within the plurality of keys is at least one key that generates, upon actuation, a reconfiguration signal for reconfiguring the keys. The reconfiguration signal enables unrelated character data, different from the initial layout of the keys, to be entered from the data input apparatus using a single keystroke.