12 7:06:35

使用工控软件中，我们经常提到组态一词，组态英文是“Configuration”,其意义究竟是什么呢？简单的讲，组态就是用应用软件中提供的工具… 阅读全文 0 人评论

TING123 Allegro 中如何使用半径添加圆弧 2009/11/12 7:04:18

问：在 Allegro 中如何使用半径添加圆弧(Arc)? 答：在 Allegro 中，执行 Add—Arc w/Radius 命令，在 Allegro 窗口的下面命令信息部分，你将看到如… 阅读全文 0 人评论

许多设计师一般是采用直接在原理图上加注高速布线要求的文字说明以通知PCB设计人员注意这些要求。如果设计是用CONCEPTHDL输入… 阅读全文 20 人评论

4.3.3 接地实际中，信号的基本接地方式有三种，浮地、单点接地和多点接地。 1．浮地浮地就是指和公共地分开的接地。采用浮地的目的是… 阅读全文 0 人评论

Step 1 设定Protel DXP等线长的NET为一个NET群组(Net Classes)，我们设定TSROW1~8 为TSROW Classes： Step 2 设定Design Rule，在High Speed项… 阅读全文 17 人评论

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