| 摘要 |
PURPOSE: A pen is provided, which uses a permanent magnet, a light emitting diode and an acoustic generation part to form various type of arrangement so that it keeps users to pay attention to the pen continuously. CONSTITUTION: In the pen which includes a casing(3), the pen comprises the parts of: not less than one permanent magnets(12,13,14) which are attached to the casing; a switch which is placed to a location in a corresponding to the permanent magnet and turned on when a magnet with specific polar approaches; and a display part which shows indication level in a proportion to the number run in the switch with light emitting diode(28,29,30) and acoustic generation part included.
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