| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed wiring board wherein a signal delay time and a signal transmission waveform can be made almost the same by making a physical length and an electrical length to be the same, in a printed wiring board using an equal-length wiring method that converts the signal delay times of a plurality of signal transmission lines at a wiring length and makes them to be almost the same. SOLUTION: This printed wiring board uses an equal-length wiring method that converts the signal delay times of a plurality of signal transmission lines at a wiring length and makes them to be almost the same. In a bypass extended wiring part for adjusting the length of a signal transmission line, the line width or line thickness of the signal transmission line in the bypass extended wiring part is entirely or partly changed.
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