PURPOSE: To extremely reduce the number of wire harnesses arranged in a car body and prevent an increase of the cost.
CONSTITUTION: A switch circuit is provided with an operation section 10 constituted of a resistor circuit connected with voltage divider resistors r1-r8 weighted with the resistance value in sequence at 2n ((n) is an integer above 0) connected in series, fed with constant voltage to one end, and grounded at the other end and operation switches SW1-SW8 connected in parallel with the voltage divider resistors r1-r8 respectively. The operation section 10 generates level signals Sv corresponding to actions of the switches SW1-SW8, controllers 20-1, 20-2 convert the level signals Sv into binary data Db and drive and control auxiliary machines 30-37 in response to the data Db.
ISHIDA KIMITAKA
OBA KIYOTSUGU
GOSHIMA NAOKI
