| 摘要 |
PROBLEM TO BE SOLVED: To provide a switch capable of being structured with the use of an inexpensive and general-purpose microcomputer. SOLUTION: A plurality of touch parts 10 change their static capacity in accordance with contact of a user. An oscillator 12 is provided for each of the plurality of touch parts 10, each of which can be switched between active and non-active, and oscillates at a frequency in accordance with a static capacity of the corresponding touch part 10. A selective circuit 14 receives an output signal of each of the plurality of oscillators 12, and outputs an oscillated signal out of them. The microcomputer 20 makes the plurality of oscillators 12 active in turn, and at the same time, is provided with an input terminal for receiving output signals of the selective circuit 14, and determines contact or non-contact with the plurality of touch parts 10 in accordance with frequencies of signals input to the input terminal. COPYRIGHT: (C)2011,JPO&INPIT |
