AVR简单的串口程序，适合初学者学习，可以直接应用

MC9S12DG128B，包含了时间中断、光电检测、舵机控制、电机驱动、实时控制等功能。有相关注释。-MC9S12DG128B, includes a time interrupted, photoelectric detection, steering control, motor-driven, real-time control functions. Relevant Notes.

电动车里程表,安装在自行车上,能显示当前速度,显示总里程数,可以用来做别的,抛砖引玉-Electric vehicle odometer, installed on the bike, can display the current speed, showing the total mileage that can be used to do anything else, start

这是一本电子书。你可以学习C语言并参考这本电子书。

基于超声波的测距仪（包括原理图，程序源码与相关调试说明，以及一些参考资料，总之，开发超声波测距仪的一整套资料）-Based on Ultrasonic Range Finder (including schematics, source code and related procedures for debugging instructions, and some reference materials, in short, develop a set of ultrasonic range finder data)

ht1621液晶驱动的测试程序，汇编语言编写-HT1621 LCD driver test procedures, assembly language preparation

PC机端程序，实现PC机与单片机的发送和接受通信.-PC-side procedures, and realize PC-MCU to send and receive communications.

本文介绍的I2C未来的两个扩展方向：热插拔和远距离通迅，其中包括电路设计。-This article describes the extension of the I2C next two directions: hot swap and long-distance Communications, which includes circuit design.

单片机通过SPI读写SD卡.使用5v系统操作3.3V的sd卡.很有借鉴价值-SCM SPI literacy through SD cards. 5v use of the system 3.3V sd card. Very valuable reference

单片机AT90S系列 制作简易USB接口（软件模拟,无usb硬件）。asm源代码- Monolithic integrated circuit AT90S series manufacture simple USB connection (software simulation, non- usb hardware). Asm source code

基于AVR单片机的机械旋转时钟，将机械和电子完美的结合，具有一定的艺术性，做好后放在家里可以当艺术品-Based on AVR microcontroller mechanical rotary clock, would be the perfect combination of mechanical and electronic, has a certain artistic quality, do a good job at home can be as works of art after