單片機八位搶答器proteus8仿真

ID:257043 · 發(fā)表于 2017-12-4 09:23

#include<reg51.h>
#define uint unsigned int
unsigned char code segdate[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
sbit ks=P3^7;
int delay;
sbit SMG1=P3^3;
sbit SMG2=P3^2;
int ren;

void xianshi(int a)
{
SMG1=0;
      P0=segdate[a/10];
      delay=50000;
      while(delay--);
      SMG1=1;
      SMG2=0;
      P0=segdate[a%10];
      delay=50000;
      while(delay--);
      SMG2=1;
}
void main()
  {
         unsigned char i;
      int time;
  while(1)
   { if (ks!=1)
      for(time=30;time>0;time--)
         for (i=8;i>0;i--)
         {
            xianshi(time);
               if(P1!=0xff)
               {
            switch(P1)
                           {
                                          case 0xfe:ren=1; break;
                                                case 0xfd:ren=2; break;
                                                case 0xfb:ren=3; break;
                                                case 0xf7:ren=4; break;
                                                case 0xef:ren=5; break;
                                                case 0xdf:ren=6; break;
                                                case 0xbf:ren=7; break;
                                                case 0x7f:ren=8; break;
                                       }
                                       while(ks)
                                             xianshi(ren);
                                                      time=30;
         }
         }

}
}

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單片機八位搶答器proteus8仿真