| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed wiring board which can reduce crosstalk noise and reflection noise and is provided with a uniformly finished circuit. SOLUTION: This wiring board is formed by pinching or surrounding a signal circuit S with a power circuit and/or a grounded circuit G in a conductor layer in the same plane. The grounded circuit G or power circuit is provided with a parallel part G08 having a shape along the adjacent signal circuit S, and an insulation area 1 is interposed at a specified width between the parallel part G08 and signal circuit S.
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