| 摘要 |
An information processing apparatus comprises a key and a proximity sensor. When the user places a finger on a depressing portion of the key, the proximity sensor detects the event, and inputs, to the information processing apparatus, proximity information indicating that the user's finger is in proximity to the key. Based on the proximity information which has been input, the information processing apparatus displays information relating to the function assigned to the key. When the depressing portion is depressed with the user's finger, the key inputs, to the information processing apparatus, information indicating that its contacts are in an on-state. Based on the input information, the information processing apparatus is able to execute the function. Thus, a function assigned to a physical key may easily be recognized by a user.
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