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介绍了在军事领域中基于Pentium M的移动计算机体系结构设计时PCB的主要规则,确定了层叠设计规则,对平行信号线间的串扰引入了仿真讨论,同时提出了时序长度匹配规则,为缩小主板面积、改进制作工艺提供了可行的方法.“,”This paper introduces the main PCB rules based on Pentium M for mobile computer architecture in military area, settles rules of layout, inducts simulate discussion to crosstalk of paralleling transmission lines, adverts the matching rules of time length, and offers an execution way to reduce motherboard area and improve making process.