 #include"reg51.h" #define uchar unsigned char #define uint unsigned int uchar dd[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f }; void delay(uchar us) { uchar m,n; while(us--) { for(m=0;m<10;m++) for(n=0;n<40;n++); } } void display(uint court) { uchar i; for(i=0;i<20;i++) { P0=dd[(court%1000)/100]; P3=dd[(court%1000)/100]; P2=0xb4; delay(5); P2=0xf0; delay(1); P0=dd[((court%1000)%100)/10]; P3=dd[((court%1000)%100)/10]; P2=0xd2; delay(5); P2=0xf0; delay(1); P0=dd[court%10]; P3=dd[court%10]; P2=0xe1;// delay(5); P2=0xf0; delay(1); } } void main() { uint dat; uchar i; while(1) { display(dat); dat++; if(dat==1000)dat=0; } } |
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