开发嵌入式实时系统很好的参考

关于ad8954的使用说明，包括调试，电路板介绍以及外为接口-With regard to the use of ad8954, including debugging, circuit boards, as well as introduce outside interface

本系统以AT89C51为控制核心，由矩阵键盘输入，LED倒计时、交通灯显示等模块组成，模拟了一个交通灯控制系统。系统除基本交通灯功能外，还具有通行时间手动设置、可倒计时显示、急车强行通过、状态切换等相关功能。包括报告提供。-AT89C51 for the control of the system core, from the matrix keyboard input, LED countdown, traffic lights displays modules, to simulate a traffic light control system. In addition to basic traffic light system functions, but also has the passage of time to manually set to countdown show, worry about car forced through, the state switching and other related functions.

这是支持MF RC500 MIFARE 读写集成电路IC的有关射频设计的应用笔记。意在提供对MIFARE 射频接口（ISO 14443A）所需的理解来设计具体天线应用和匹配电路，为了使无接触MIFARE卡通信有最优表现。本文给出了系统的RF部分背景，以及如何为标准应用设计和调试天线的过程概述。详细说明了两种不同的天线和匹配概念以及它们的设计实例。还描述了完整的调试天线的步骤。作为附件的一部分，有兴趣的读者会发现RF接口的详细理论描述-This is to support reading and writing IC MF RC500 MIFARE RF IC design of the Application Notes. Intended to provide MIFARE RF Interface (ISO 14443A) designed to understand the requirements of specific applications and antenna matching circuits, in order to make contactless MIFARE cards have the best communication performance. In this paper, the RF part of the background of the system, as well as standard application for the design and debugging process of an overview of the antenna. Detailed description of the two different concepts of antennas and matching, as well as their design. Also a complete description of the steps to debug the antenna. As part of the annex, interested readers will find the detailed theory of RF Interface Description

一个POWERPC的原理图,包括ORCAD格式的原理图等-The schematic diagram of a PowerPC, including the ORCAD schematic format and so on

此代码可以处理基本 led 切换。初学者可以认为此代码是复杂。但以不同的方式闪烁的 LED 是一种最佳方法，我们可以适用于所有电气设备。我尝试了这段代码，有输出...

应用背景本例程序经过一个月的验证和调试，先已经很稳定，能够实现无霍尔有霍尔模式运转，和30度延时换相，脉宽调速等，并且里面还带详细的原理图和学习资料，很适合初学者学习使用。关键技术能够实现无霍尔有霍尔模式运转和30度延时换相脉宽调速，运行很稳定，可用于家电类的电机控制等等。

HT1380实时时钟驱动程序-HT1380 real-time clock driver

C语言开发的数字钟程序，希望对大家有用！真是第二个文件！-development of the C language digital clock procedures in the hope that it may be useful right! The second document is!

基于MSP430的单片机的TC35/MC35的无线通讯MODEM-based on the MSP430 MCU TC35/MC35 wireless MODEM

232转以太网的线路图 使用lpc2294cpu 可更换为lpc2292-232 to Ethernet lpc2294cpu route map can be used to replace the lpc2292