An integrated circuit generally comprising a plurality of input pads, an input circuit, and a core circuit. The speed reducing mechanism comprises an input pulley driven by the electric motor, an output pulley arranged with the steering shaft enclosed thereby, a belt for connecting the input pulley and the output pulley to each other, and means for adjusting the tension of the belt. The first reaction chamber is connected to the exhaust pump via the second reaction chamber. The third part includes bends for forming P ground sections. Then the wireless receiver applies differential processing on the equalized signal to convert the frequency offset into a constant phase offset. This prevents the connector from rotating, although does not interfere with the modest amounts of connector shifting in the sub-chassis bracket.