| 摘要 |
PURPOSE:To reduce the manufacturing cost of a circuit board device so constituted as to mount electronic parts on both principal planes. CONSTITUTION:There is provided a circuit board 1 where the even number of circuit board parts 2a-2d are juxtaposed with each other. On the side of one principal plane 1a of the circuit board 1, the wiring conductors 8a, 8c of the pattern on the surface side and those 9b, 9d of the pattern on the rear surface side are arranged alternately. Also on the side of the other principal plane of the circuit board 1, the wiring conductors of the pattern on the rear surface side and those of the pattern on the surface side are arranged alternately. Mounting of electronic parts to a plurality of circuit board parts 2a-2d on the side of one principal plane 1a of the circuit board 1 and that of the electronic parts to the plurality of circuit board parts 2a-2d on the side of the other principal plane are conducted by the use of the same device. |
