S3C2440开发板原理图，决对有价值的东西

单片机 c语言编写 注释详细 时钟日历芯片PCF8563的应用-Singlechip c language notes detailed calendar clock chip PCF8563 Application

采用gpio口来控制串口扩展芯片的驱动和测试程序，包括串口的封装程序。--Using gpio port to control the driver and testing program of serial port expansion chip.

用闪存实现单片机存储器的扩展 学会闪存的编程方法 -memory expansion

基于PIC单片机的嵌入式CAN智能节点及其与PC的通信。-PIC MCU-based embedded CAN intelligent node and its communication with the PC.

QT电子书的代码 这个是我以前下载的 忘记在哪了 这只是一个小小的电子书 里面加了一些东西 比如颜色之类的

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

这个源代码实现了51单片机多路舵机同时控制程序，已通过测试

从提取的文件中键入word并打印出LCM点阵解码器的代码示例。

由于普通单片机只有一个串口,由于用户可能会用到多个串口,而对于双串口的单片机价格贵,不如自己动手选择两个IO口,自己模拟串口通讯,以下为模拟串口程序.-Because there is only one common single-chip serial port, as the user might use multiple serial ports, dual serial ports for the price of your microcontroller, it is better to select two IO own mouth that they simulation serial communication, the following for Simulation of serial procedures.

olimex arm 板是 stm32f e407。sd 卡的例子是包括在内的。非常有用的文件。 sd 卡很简单的函数