基于51单片机的计分器设计.rar

#include <REGX52.H> #include "intrins.h" unsigned char show_num[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; unsigned char yi,er,qi,ba; int num1,num2; void delay(unsigned char t) //@11.0592MHz { unsigned char data i, j; while(t--) { _nop_(); i = 2; j = 199; do { while (--j); } while (--i); } } void display(int addr) { switch(addr) { case 1:P2_4=1;P2_3=1;P2_2=1;break; case 2:P2_4=1;P2_3=1;P2_2=0;break; case 3:P2_4=1;P2_3=0;P2_2=1;break; case 4:P2_4=1;P2_3=0;P2_2=0;break; case 5:P2_4=0;P2_3=1;P2_2=1;break; case 6:P2_4=0;P2_3=1;P2_2=0;break; case 7:P2_4=0;P2_3=0;P2_2=1;break; case 8:P2_4=0;P2_3=0;P2_2=0;break; } } void smg_proc(unsigned char yi,er,qi,ba) { display(7); P0 = show_num[yi]; delay(5); display(8); P0 = show_num[er]; delay(5); display(1); P0 = show_num[qi]; delay(5); display(2); P0 = show_num[ba]; delay(5); } void key_proc() { if(P3_2 == 0) { delay(20); if(P3_2 == 0) { num2++; } while(!P3_2); } if(P3_3 == 0) { delay(20); if(P3_3 == 0) { num2--; } while(!P3_3); } if(P3_1 == 0) { delay(20); if(P3_1 == 0) { num1++; } while(!P3_1); } if(P3_0 == 0) { delay(20); if(P3_0 == 0) { num1--; } while(!P3_0); } if(num1 < 0)num1 = 0; if(num1 > 99)num1 = 99; if(num2 < 0)num2 = 0; if(num2 > 99)num2 = 99; } void main() { while(1) { key_proc(); yi = num2/10; er = num2%10; qi = num1/10; ba = num1%10; smg_proc(yi,er,qi,ba); } }