#include#include 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 = 0xff; P0 = LED; while(1) { delayms(1000); LED = LED<<1; //循环右移1位。

点亮下一个LED if(LED==0x00) { LED=0xff; } P0 = LED; }}。