| 摘要 |
A printed circuit board comprises a high-speed DRAM and a memory controller mounted thereon. The high-speed DRAM is connected to the memory controller by memory bus wiring. The printed circuit board further comprises a power supply pattern connected to the memory bus wiring via a parallel terminal end resistor. A series circuit is formed by serially connecting, between the power supply pattern and a ground pattern, a capacitor and a resistor having a resistance value substantially equal to a characteristic impedance of the power supply pattern.
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