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cadence**
2016-9-1 13:23
- PCB技术
- 5
- 730
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
第一块四层板,求大神点评
2016-5-30 14:38
- PCB技术
- 3
- 1417
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
求 AD软件画的带有盲孔、埋孔的PCB例子
2016-5-29 23:21
- PCB技术
- 3
- 1379
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
刚画完的线,累成狗了
2015-8-9 20:01
- PCB技术
- 9
- 1154
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
新手刚学PCB布局、布线,请前辈大牛多多批评指正
2015-8-5 17:14
- PCB技术
- 15
- 1750
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
求教,llegro 怎么快速的加地孔,在地铺铜上?
2015-7-22 11:57
- EDA 技术
- 7
- 1078
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
99se绘制原理图Cadence绘制PCB的方法,求救
2014-9-24 14:13
- PCB技术
- 5
- 1175
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
20分求一份曾经的索尼(?)铺铜规则PDF
2014-9-6 11:24
- PCB技术
- 4
- 1865
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
请评价一下这个布局布线
2014-8-25 11:07
- EDA 技术
- 7
- 1807
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
allegro PCB designer 不能flip design
2017-2-16 13:15
- EDA 技术
- 9
- 12937
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
请问在PCB中怎么区分信号线和电源线?
2014-8-1 12:47
- PCB技术
- 11
- 9439
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
四层板的内电层设置问题
2014-8-1 09:12
- PCB技术
- 6
- 5872
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
学习画pcb是不是需要学习信号完整性分析
2014-7-27 22:41
- PCB技术
- 6
- 2896
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
电脑主板,是手动布线,还是自动布线 ?
2014-7-30 15:25
- PCB技术
- 12
- 3329
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
专业PCB设计
2014-7-3 20:42
- 创业|外包|承接
- 21
- 2650
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
PCB 地连接桥
2014-7-4 09:35
- PCB技术
- 4
- 1837
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
请教各位,最近看了一个PCB图感觉不是很理解,求赐教!
2014-7-2 22:49
- PCB技术
- 9
- 1788
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
布线时扑捉不到焊盘
2016-9-8 13:21
- PCB技术
- 3
- 975
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
-48V转5V1A芯片推荐
2016-11-24 00:21
- 电源技术
- 2
- 1278
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
2
3
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