| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To increase the number of detectable switches, in a capacitance type touch switch including a plurality of the switches. <P>SOLUTION: The detection of the plurality of switches is collected to a detecting circuit 16 using a parallel-serial circuit such as a multiplexer 18, and further a switch different in property includes an independent detecting circuit 16. Since the switches having the same operations can be set to the same amplification factor of an operational amplifier 17, input terminals of the detecting circuit 16 and a microcomputer can be eliminated, and in the switch different in area and function from the other switch, the amplification factor can be set independently. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
