| 摘要 |
Each of a number of independently-operated input buttons is actuable in five directions and a unique output response is associated with each of the directions. Preferably, there are five finger buttons and at least one thumb button. The five-position thumb button can be used to shift the key assignments of the finger buttons and thus greatly enlarge the size of the response set. The apparatus may be configured to receive a mouse, or it may be incorporated into a cell phone.
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