| 摘要 |
The instant application provides a keyboard for a touch-operated device. In one embodiment, a band is provided that includes two keyboards, one for portrait mode and one for landscape mode; the band can be slipped onto the touch-operated device as needed. In another embodiment a sleeve is provided that includes front and back faces, each with a respective viewing window and keyboard to support landscape mode and portrait mode operations, respectively. Another embodiment sleeve includes a single window and two detachable keyboards, one for portrait mode and one for landscape mode, that may be affixed to the sleeve as needed.
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