pcb的板子喔，是一个关于c8051f120的开发板子，敢兴趣的朋友可以用来做一个板子用的。-Board of PCB Oh, is a study on the C8051F120development board, interested friends can be used to make a board in the

c8051f120电机PCA0测速及PWM调速.rar一一个比较有趣的程序源码，PWM技术非常时髦. 可直接使用。 -C8051F120 motor PCA0 tachometer and PWM speed control. rar a more interesting program source, PWM technology is very fashionable. can be used directly.

C8051F120，设置串口定时发送数据的一个简单程序。-C8051F120, set the serial port to send data to a simple timer program.

C8051F120,串口通信，电机控制，FPGA连接通信(C8051F120 serial communication, motor control, and FPGA connection)