#include <reg52.h>

sbit bw= P3^0;
sbit sw= P3^1;
sbit gw= P3^2;

unsigned  ZXM[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};

main()
{
   int k=456;

   bw=k/100
   sw=k/10/10
   gw=k%10

   
   while(1)
   {
   P0=ZXM[5];
   P3^0=0;
   P3^1=1;
   P3^2=1;
   Delay(800)

   P0=ZXM[6];
   P3^0=1;
   P3^1=0;
   P3^2=1;
   Delay(800)

   P0=ZXM[7];
   P3^0=1;
   P3^1=1;
   P3^2=0;
   Delay(800)
   }

  }

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#include <reg52.h>

sbit bw= P3^0;
sbit sw= P3^1;
sbit gw= P3^2;

unsigned  ZXM[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};

main()
{
   int k=456;

   while(1)
   {

   P0=ZXM[(k/100)+1];£]
   bw=1;
   sw=gw=0;
   Delay(800)

   P0=ZXM[(k/10)%10+1];
   sw=1;
   ge=bw=1;
   Delay(800)

   P0=ZXM[k%10+1];
   gw=0;
   bw=sw=1;
   Delay(800)
   }

  }

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