单片机流水灯代码及仿真

#include <reg51.h> #include <intrins.h> void delayms(unsigned char ms) // 延时子程序 { unsigned char i; while(ms--) { for(i = 0; i < 120; i++); } } main() { unsigned char LED; LED = 0xfe; P0 = LED; while(1) { delayms(250); LED = _crol_(LED,1); //循环右移1位，点亮下一个LED P0 = LED; } }