| 摘要 |
PURPOSE: A method for implementing a piano with a multi-touch screen is provided to efficiently make enough keyboards to play the piano with both hands on the multi-touch screen in a small mobile apparatus. CONSTITUTION: A small mobile apparatus includes a multi-touch screen. The full screen of the multi-screen is divided into a keyboard part and a traction part(7). A part of the entire keyboards is arranged on the keyboard part. On the keyboard part, at least keyboards(1) of one or more octave are arranged. When the traction part is dragged, the keyboards are slid according to a drag direction.
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