demo board used for RTL8029AS，完整的工程，原理图和PCB都有了，用ALTIUM或PADS2007打开。-demo board used for RTL8029AS, complete engineering, schematic and PCB have been using Altium or opens PADS2007.

主要讲了c8051f020单片机的PCA频率输出功能实现。-Major topics of the c8051f020 microcontroller PCA frequency output function realization.

C​ 语​ 言​ 描​ 述​ P​ I​ D​ 算​ 法​ 程​ 序 #include <C8051F020.H> #include <string.h> #include <math.h> //void PIDInit(PID *PP) -C language descr iption of the program of the PID algo