ok!The program is very good!

帮朋友写的一个用MCS-51的IO口模拟PWM使外接LED亮度渐变的程序，虽然程序小，不过注释清楚，并已调试OK。-written for a friend with a MCS-51 simulation of the IO mouth so that external PWM LED brightness gradual process Although procedures for small, but clearly Notes, and debugging OK.

HT1621的驱动文件，对于测试段码液晶比较有用，部分程序参考了别人。-HT1621 driver files, for testing liquid crystal above code more useful, some of the procedures with reference to others.

电机控制驱动芯片L298经典控制实例，源码，引脚及应用电路图-Motor Control Driver IC L298 classic control examples, source code, pin and application circuit

悠景2.7寸OLED演示代码，可以在DEMO板上测试-Univision 2.7-inch OLED demo code, you can test at the DEMO board

24C02的读写操作,用汇编语言完成,在开发板上运行正常-24C02

51系列单片机实验课程：时钟程序 （显示时刻时、分、秒）-51 Series single-chip experimental curriculum: the clock program (shows time of hour, minute, second)

D12与电脑通过USB单片机通信的程序，开发人员可以参考

周立功的SD卡源代码,请大家参考,希望对大家有所帮助,-Week Ligong the SD card source code, please refer to, and they hope to be helpful to everyone,

利用单片机实现简单音乐发生器，可以尝试实践一下，比较简单-MCU use simple music generator, may try to practice that is relatively simple

AVR M16单片机AD转换测试程序，ICCAVR编译，测试通过，-M16 AD converter testing procedures ICCAVR compile, test,