| 摘要 |
A user interface by which contents of what is being processed can be confirmed with the sense of touch is provided. On a first surface of a portable phone, first piezoelectric devices are arranged, and on a second surface of the portable phone, second piezoelectric devices are arranged. When radio waves are transmitted, a displacement is generated from the first and second last piezoelectric devices at the same time when radio waves are transmitted from an antenna, and the displacement moves in sequence to the piezoelectric devices of the upper portion. When the displacement moves to the first and second initial piezoelectric devices, a displacement is generated repeatedly from the first and second last piezoelectric devices, and is continued until the other party to which a call is being originated responds.
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