帮助所需/已知问题： 加密的击键仅适用于固件为012.001.00019及C-U0007加密狗，而012.001.00019上的012.010.00032则拒绝这些击键 如果可以帮助，请参阅 用于构建Logitech Unifying兼容设备的库 我一直想要84键标准布局，带RGB背光的无线机械键盘，旋钮以及空格键附近的媒体控制按钮。 无论如何，我很快就意识到蓝牙键盘是众所周知的不可靠的设备，经常会断断续续地断开连接。 但是，统一的要好得多。 我从未计划发布此代码，因此它不是最干净的。 但是由于卡住了，我认为有人可以很好地利用它，也许可以找出问题所在。 如果您可以制定一个更加安全的Unifying兼容协议，那就更好了。 非常感谢： 罗南·盖拉德（Ronan Gaillard） RoganDawes和Marcus Meng 执行AES ECB模式的代码，如果有人知道它的起源，将很乐

和BOM(pdf格式). Board AT91SAM9260.rar AT91SAM9260-EK Board 原理图,orcad格式.rar AT91SAM9260-EK Board BOM.pdf

LPDDR4测试板 版权所有（c） 概述 该存储库包含针对围绕Xilinx Kintex-7 FPGA构建的实验平台的开放硬件设计文件。 该平台的主要目的是开发和定制支持LPDDR4 IC的RAM控制器。 设计文件是在KiCad中准备的。 该设计现在是进行中的作品。 储存库结构 主存储库目录包含KiCad PCB项目文件，许可证和自述文件。 其余文件存储在以下目录中： lib包含组件库 img包含本自述文件的图形 主要特点 Kintex-7 FPGA-XC7K70T-FBG484 带有定制DDR4 SO-DIMM连接器的模块化设计 HDMI输出连接器 带有1GbE收发器的以太网RJ45连接器 带有FT4232HQ FTDI USB控制器的Micro USB调试连接器 JTAG microSD卡插槽 QSPI闪存 外部7-12V电源输入 5个用户LED 4个用户按钮 框图 执照

EP9302 Demo Board,含PCB与原理图，Protel 99SE格式

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############################################### #### #STM32F100 VL 探索板-ST7735 LCD 库################################## ################## ＃＃要求：＃＃ STM32F100 价值线探索板 1.8" TFT LCD 模块 (ST7735R) ARM GCC 工具链安装arm-none-eabi GDB服务器 此存储库中包含的库 ＃＃安装：＃＃ 克隆或下载此存储库的本地副本 ST7735LCD目录内是 LCD 库的源代码。 spi.c spi.h是用于与 LCD 通信的 SPI 函数的来源 ST7735.c ST7735.h是各种 ST7735 LCD 功能的源代码 main.c main 函数所在的位置 将源码编译成ST7735.elf 使用

2.1. 2.2. 2.3. 2.4. 3.1. 3.2. 4.1. 4.2. 4.2.1. 8 位独立 LED 显示设计实验 26 4.2.1. 基于 74H

Preface Printed Circuit Board Design Techniques for EMC Compliance: A Handbook for Designers, Second Edition, is a significant enhancement to the first edition. The first edition was well received within the engineering community worldwide and was translated into international languages. The intent of the present volume is to expand upon concepts presented in the earlier edition, to justify why a specific design technique works, and to show when it is appropriate for use. Additional techniques based on technological changes within the last few years are also incorporated. These techniques and enhancements are based on questions, comments, and discussions received from engineers around the world. This book presents information never before published within the engineering community, dealing exclusively with printed circuit boards (PCBs). When writing the first edition, it was impossible to anticipate the amount of variations possible, or what the intended audience expected from a book directed toward nondegreed engineers. A thorough understanding of the concepts presented herein will assist during the design and layout process. Note the key word here —"concepts." Printed Circuit Board Design Techniques for EMC Compliance will help minimize the emission or reception of unwanted radio frequency (RF) energy generated by components and circuits, thus achieving acceptable levels of electromagnetic compatibility (EMC) for electrical equipment. The field of EMC consists of two distinct areas: 1. Emissions: Propagation of electromagnetic interference (EMI) from noncompliant devices (culprits) and, in particular, radiated and conducted electromagnetic interference. 2. Susceptibility or immunity: The detrimental effects on susceptible devices (victims) in forms that include EMI, electrostatic discharge (ESD), and electrical overstress (EOS). The primary goal of the engineer is to ensure proper operation and performance of a product when used within an intended electromagnetic environment. These design requirements are in addition to making a product function as desired for use within a specific, end-use environment. Information presented in this guideline is intended for those who design and layout printed circuit boards. EMC and compliance engineers will also find the information presented herein helpful in solving design problems at both the PCB and system level. This book can be used as a reference document for any design project. The focus of this book is strictly on the PCB. Containment techniques (shielding), internal and external cabling, power supply design, and other system-level subassemblies that use PCBs as a subcomponent will not be discussed. Again, as in the first edition, excellent reference material on these aspects of EMC system-level engineering is listed in the References section at the ends of chapters.

Printed Circuit Board Designers Reference Basics