| 摘要 |
The device contains a body 1 in which a stem 3 oscillates with the interposition of force sensors 8. The signals sent by the sensors are processed by a deviation calculator calculating the directions of the forces to which the stem is subjected with respect to a fixed reference system of the body, the series of changes in direction being analysed by a sign recognition calculator, then sent to an arithmetic calculator capable of carrying out an arithmetic operation according to the series of signals received. <IMAGE>
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