| 摘要 |
PURPOSE: A printed circuit board is provided to prevent an error in a data reading and writing operation by preventing the delay of a signal regardless of the sudden temperature change. CONSTITUTION: A printed circuit board includes an address line(10), a data line(20), and a clock line(30). A pattern length of the address line is same as the pattern length of the data line. The pattern length of the clock line is 2 to 5 mm longer than the pattern length of the data line. The pattern length of the address line and the data line is 15 to 60 mm. The pattern thickness of the address line, the data line, and the clock line is 0.2 to 0.3 mm.
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