緣由單片機節日彩燈控制器設計-編程語言-CSDN問答

#include "reg52.h"
sbit k0=P1^2;
sbit k1=P1^3;
sbit k2=P1^4;
sbit k3=P1^5;
bit k=0,kk=0;
void main()
{unsigned char Xd=0;unsigned int ys=0; while(1){if(k0==0&&++Xd==0){kk=0;k=P3=1;while(k0==0);}if(k1==0&&++Xd==0){kk=k=0;P3=255;while(k1==0);}if(k2==0&&++Xd==0){kk=k=P3=1;while(k2==0);}if(k3==0&&++Xd==0){kk=1;k=0;P3=128;while(k3==0);}if(++ys==0){if(kk){if(k)if((P3*=2)==0)P3=1;else;				else if((P3/=2)==0)P3=128;else;}elseif(k)if((P3*=2)==0)P3=1;else;}}
}

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