找到约 809 条结果
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PCB设计中3W原则20H原则和五五原则都是什么

3W原则

在PCB设计中为了减少线间串扰,应保证线间距足够大,当线中心间距不少于3倍线宽时,则可保持大部分电场不互相干扰,这就是3W规则。3W原则是指多个高速信号线长距离走线的时候,其间距应该遵循3W原则,例如时钟线,差分线,视频、音频信号线,复位信号线及其他系统关键电路需要遵循3W原则,而并不是板上所有的布线都要强制符合3W原则。

 

满足3W

2021-11-08 01:30:02 下载 10 查看 4,762
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Source codes and documents for how to find files in phone memory or mmc card in Symbian OS. Compatib

Source codes and documents for how to find files in phone memory or mmc card in Symbian OS.
2014-12-07 21:44:01 下载 156 查看 1,132
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1.闪存卡(Flash Card )资料收集总结之一(详细版本)

1.闪存卡(Flash Card )资料收集总结之一(详细版本)
2015-09-01 10:03:01 下载 140 查看 1,103
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1.闪存卡(Flash Card )资料收集总结之二(详细版本)

1.闪存卡(Flash Card )资料收集总结之二(详细版本)
2014-01-22 04:01:18 下载 60 查看 1,061
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This source can emulate function generator using sound card. This source is very useful for sound c

This source can emulate function generator using sound card.
2016-04-03 10:00:02 下载 21 查看 1,085
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This little Program allows you to send commands to the CardReader (CT-BCS) or to the Card itself. F

This little Program allows you to send commands to the CardReader (CT-BCS) or to the Card itself.
2016-04-23 20:24:01 下载 77 查看 1,075
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DWG_Smart-Card_USB-ICC_ICCD_rev10 smartcard USB方面的标准

DWG_Smart-Card_USB-ICC_ICCD_rev10 smartcard USB方面的标准
2014-01-02 15:46:07 下载 110 查看 1,056
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wi-fi sources for asus wl138g v2 pci card

wi-fi sources for asus wl138g v2 pci card
2013-12-22 15:43:07 下载 64 查看 1,111
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利用Card类和循环语句编写一个扑克牌游戏

利用Card类和循环语句编写一个扑克牌游戏
2013-12-29 20:24:08 下载 179 查看 1,039
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NFC Card万能读卡android程序,可读公交卡,银行卡

NFC Card万能读卡android程序,可读公交卡,银行卡,Android经典源码资料,需要的可以下载,仅供参考!!!
2022-11-06 16:40:02 下载 9 查看 4,644
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Serpent算法,想必搞相关行业的朋友看到压缩文件名字就知道是什么了!

Serpent算法,想必搞相关行业的朋友看到压缩文件名字就知道是什么了!
2013-12-19 02:34:05 下载 27 查看 1,117
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This designs uses a Nios II system to demonstrate how to read from the SD card. The software reads W

This designs uses a Nios II system to demonstrate how to read from the SD card.
2015-10-26 00:40:02 下载 151 查看 1,149
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USB audio card 音效卡設計原理圖,說明及源碼

USB audio card 音效卡設計原理圖,說明及源碼
2015-11-27 00:19:01 下载 40 查看 1,148
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developed under vxwork, support bt878 video card, use socket to stream video out.

developed under vxwork, support bt878 video card, use socket to stream video out.
2014-03-04 06:00:14 下载 150 查看 1,101
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PXA270平台下WINCE6.0的PC CARD控制驱动

PXA270平台下WINCE6.0的PC CARD控制驱动,欢迎大家下载
2016-02-25 20:50:01 下载 193 查看 1,073
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PXA270平台下WINCE6.0的SD CARD控制驱动

PXA270平台下WINCE6.0的SD CARD控制驱动,欢迎大家下载
2016-02-25 20:52:01 下载 40 查看 1,092
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基于windows ce环境下对smart card 基于pc/sc架构下驱动例程

基于windows ce环境下对smart card 基于pc/sc架构下驱动例程
2016-11-18 10:46:02 下载 169 查看 1,098
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一个at29c040_Card的设计图和程序源码

一个at29c040_Card的设计图和程序源码
2016-12-20 10:07:01 下载 182 查看 1,059
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It using music card to test left and right ear seperately. It contains graphic iterfac

It using music card to test left and right ear seperately.
2017-03-24 10:15:02 下载 197 查看 1,062
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This SPI-mode SD Card controller is a free SOPC Builder component that can be used in any SOPC Build

This SPI-mode SD Card controller is a free SOPC Builder component that can be used in any SOPC Builder
2013-12-18 16:03:03 下载 66 查看 1,121
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