nec 78F0433 燃气表

几个精确C语言延时程序.1:500ms 2:200ms. 3:10ms.4:1s.-Several precision C language delay procedures .1:500 ms 2:200 ms.3: 10ms.4: 1s.

该源程序已在实验板上调试通过，读者可直接引用，并可以利用软件编程的灵活性，加以拓展，实现更为复杂的功能。--Use 16F877 to implement a clock functionality. It is tested on an experiment board.

摄像头抓屏程序 在linux下运行 需要v4l.h v4l.c-use webcam to capture pics in linux

嵌入式开发书籍，指导如何进行嵌入式开发的基本方法，环境配置-Embedded Development books, guidance on how to carry out the basic methods embedded development, environment configuration, etc.

lwIPtcp/ip栈。做嵌入式的同志们肯定有很多都在找这个吧，我提供的这个包里不仅包含源代码，还有详细的参考手册（PDF）。希望大家喜欢-lwIPtcp/ip stack. So embedded comrades am sure many are looking for the bar, I offer this bundle includes not only the source code, there is a detailed reference manual (PDF). Hope you like

infineon C515C RTX51 example. it contains example on using this device

LPC932附加EEPROM操作-LPC932 operation EEPROM

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

ARM和CPLD的JTAG的原理图，以及PCB图，为公司做的，顺便发出来，有需要的可以下栽-ARM and CPLD schematic diagram of the JTAG and the PCB map, to do for the company, and the way it comes, there is a need can下栽

这是通道控制用的闸机源码，已在多家公园景区机关院校使用．-This is the access control gates used source, has many scenic parks authority institutions use.