AVR_Meag8模拟USB接口，并实现数模采集ADC，包含PC机端源码

该头文件配合key.c，在main函数中调用key.c，都文件中添加key.h，使软件更清晰，一目了然-The header file with key.c, in the main function call key.c, all files add key.h, so that software is more clear at a glance

频率测量程序，都是正在产品的使用中，高低频自动切换显示-Frequency measurement procedures, are all products in use, high-low-frequency automatic switching display

单片机最新书籍－从基础到高级,介绍简单易懂,对初学者很有帮助。-Singlechip latest books- from basic to advanced, easy-to-understand introduction, very helpful for beginners.

电子图书《华中理工大学出的C51教材》，很不错的。-electronic books "Huazhong University of Science and the C51 materials," very good.

STC单片机大量电路实例，有电源电路，通信电路，含原理图-STC Singlechip a large number of circuit examples, have the power circuits, communication circuits, including schematic diagram

三。对于进入密码锁的钥匙，假设复位后8个LED全亮，并使用sw1、sw2、sw3 3，然后sw2-> sw1-> sw3-> sw1，则表示解锁右侧会导致8个LED全暗。

51bote 单片机波特率设计助手-Single-chip baud rate 51bote Design Assistant

MSP430F413单相电表DEMO(编译器IAR 3.42A)-MSP430F413 single-phase meter DEMO (compiler IAR 3.42A)

320*240点阵液晶模块驱动程序,控制芯片为SED1335；128*64点阵液晶体驱动程序，控制芯片为ks0108.-320* 240 dot matrix LCD driver, controller chips for SED1335; 128* 64 dot-matrix LCD driver, controller chips for ks0108.

ADC0809AD转换器基本应用技术，proteus的实践例子 既有电路又有keil里的程序 asm or c-Converter ADC0809AD basic application technology, proteus practice examples of both circuit and keil procedures in asm or c