这是关于c8051单片机的PCA的程序，希望大家能够努力的学习这款单片机-This is the chip on the PCA program c8051, hope that we can strive to learn this microcontroller

C8051F040的PCA可编程计数器的程序，经调试通过-The PCA C8051F040 programmable counter program, the debugging