project.zip_mena5o_流水灯

#include"reg51.h" #include"intrins.h" #define uchar unsigned char #define uint unsigned int void delayms(uint); void main(void) { uchar temp; temp=0xfe; while(1) { P2=temp; delayms(1000); temp=_crol_(temp,1); } } void delayms(uint j) { uchar i; for(;j>0;j--) { i=250; while(--i); i=249; while(--i); } }