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Altium 向导画封装 不正常,求助
2016-4-21 20:39
- PCB技术
- 8
- 1109
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
哪位大神发一份有bga封装的多层pcb来参考一下
2016-4-21 17:02
- PCB技术
- 3
- 736
![](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ad中, 如何从元件库中, 一次选中多个元件?
2019-1-23 21:41
- PCB技术
- 5
- 3476
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
Oracd快速添加物料名称和封装
2016-4-22 09:54
- PCB技术
- 3
- 682
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
芯片内部兩個pin是互相连接的,怎么在封装和原理图上体现啊?
2016-4-20 09:14
- EDA 技术
- 3
- 797
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
pads与allegro对比
2016-4-21 23:02
- PCB技术
- 6
- 1412
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
常用公司的pcb,原理图封装库去哪里下载的
2016-4-11 19:01
- PCB技术
- 13
- 9763
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
从新手到高手-做精硬件设计之精读datasheet
2016-10-11 16:00
- 新手园地
- 30
- 3486
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
固态硬盘的原理图与PCB
2016-5-3 11:34
- 电子技术交流论坛
- 10
- 1124
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
新装的AD09,如何设置按住鼠标轮放大缩小
2016-4-11 10:41
- PCB技术
- 13
- 7400
![](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 LAYOUT外包
2017-6-23 13:00
- 创业|外包|承接
- 33
- 8323
![](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 LAYOUT的一般流程
2016-3-23 19:32
- PCB技术
- 9
- 6761
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
pads的原理图封装名称和PCB封装名称 ?
2016-3-4 09:04
- EDA 技术
- 3
- 1174
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
求大神 推荐一个 2.4G无线遥控的方案
2016-2-24 17:56
- 通信技术
- 2
- 1616
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
求票据、标签打印机控制板设计原理图
2018-2-1 13:36
- 电路赏析
- 12
- 1624
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
全志A20 PCB封装
2016-2-26 22:00
- PCB技术
- 2
- 1151
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
怎么快速布局元件
2016-2-23 19:52
- PCB技术
- 14
- 8241
![](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 PADS9.5 学习视频 !
2016-2-22 16:59
- EDA 技术
- 3
- 755
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
等长线的长度是根据什么设定的
2016-2-22 17:01
- EDA 技术
- 2
- 734
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
有人用过 tlc5958吗?有没有什么学习资料,请指点指点?
2016-2-22 16:48
- PCB技术
- 1
- 929
![](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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