利用51单片机控制时钟，从而控制流水灯，不同状态
操作方法
（01）#include<reg51.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned intvoid delay(uint z){uint x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}void main(){uint aa,p,i;while(1){aa=0xfe;P1=aa;for(i=0;i<7;i++){delay(500);aa=aa<<1;P1=aa;}for(i=0;i<8;i++){delay(500);aa=aa>>1;P1=aa;}P1=0xff;delay(50);for(i=0;i<5;i++){P1=0x00;delay(300);P1=0xff;delay(300);}aa=0xfe;P1=aa;for(p=0;p<7;p++){delay(500);aa=_crol_(aa,1);P1=aa;}aa=0x7f;P1=aa;for(p=0;p<8;p++){delay(500);aa=_cror_(aa,1);P1=aa;}for(i=0;i<5;i++){P1=0x00;delay(300);P1=0xff;delay(300);}}}
