| 摘要 |
<p>PURPOSE:To suppress the reflection of high-speed signal at the branch point of a circuit board for transmission of high-speed signals. CONSTITUTION:A transmission path is made by connecting the VIA's 13 and 24 with each other by a pad 18 on the surface layer of a board, and electrically connecting an electronic part 4 to this pad 18, and connecting several VIA's 12 and 13 to a line 15 in the middle layer, and connecting VIA's 24 and 14 by a line.</p> |
