To substantially reduce crosstalk noise which causes an electronic apparatus to malfunction.

In signal wirings of three or more transmission lines the product of the transmit end impedance of one fixed signal wiring, on which the output potential of a drive circuit is invariable in transmitting signals and the receiving end impedance of a plurality of variable signal wirings, on which the output potential of the drive circuit varies, is equal to the radio of the mutual capacitance between the one fixed signal wiring and each variable signal wiring to the mutual inductance between the one fixed signal wiring and each variable signal wiring. The electronic apparatus has a reception-end side impedance value of the plurality of variable signal wirings which provides above ratio.