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#include <reg52.h> #define uchar unsigned char #define uint unsigned int uchar num; sbit key18=P1^4; sbit D1=P2^0; uchar code shu[]={ 0xc0,0xf9,0xa4,0xb0, //共阳数码管段码 0,1,2,3 0x99,0x92,0x82,0xf8, //共阳数码管段码 4,5,6,7 0x80,0x90 //共阳数码管段码 8,9,全灭,横杠 }; void delay(char z) { char x,y; for(x=100;x>0;x--) for(y=z;y>0;y--); } void main() { while(1) { P2=0x7f; P0=0xff; P1=0xff; if(key18==0) { delay(5); if(key18==0) { D1=0; num++; if(num==10) { num=0; } P2=0x7f; P0=shu[num]; } while(key18!=1); delay(5); while(key18!=1); } else { D1=1; } } } |
