#include<reg52.h>
#define uchar unsigned char
unsigned long num;
uchar j,k;
uchar a0,b0,c0,d0,e0,f0;
sbit dula=P2^6;
sbit wela=P2^7;
sbit s2=P3^4;
sbit s3=P3^5;
sbit s4=P3^6;
unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};
void delay(uchar i)
{
for(j=i;j>0;j--)
for(k=125;k>0;k--);
}
void display(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f)
{
dula=0;
P0=table[a];
dula=1;
dula=0;
wela=0;
P0=0xfe;
wela=1;
wela=0;
delay(5);
P0=table[b];
dula=1;
dula=0;
P0=0xfd;
wela=1;
wela=0;
delay(5);
P0=table[c];
dula=1;
dula=0;
P0=0xfb;
wela=1;
wela=0;
delay(5);
P0=table[d];
dula=1;
dula=0;
P0=0xf7;
wela=1;
wela=0;
delay(5);
P0=table[e];
dula=1;
dula=0;
P0=0xef;
wela=1;
wela=0;
delay(5);
P0=table[f];
dula=1;
dula=0;
P0=0xdf;
wela=1;
wela=0;
delay(5);
}
void keyscan()
{
if(s2==0)
{
delay(10);
while(s2==0);
num++;
while(!s2);
}
if(s3==0)
{
delay(10);
while(s3==0);
num=0;
while(!s3);
}
if(s4==0)
{
delay(10);
while(s4==0);
num--;
while(!s4);
}
}
void main()
{ while(1)
{
keyscan();
if(num<10)
{
a0=num;b0=16;c0=16;d0=16;e0=16;f0=16;
}
else
{
if(num<100)
{a0=num/10;b0=num%10;c0=16;d0=16;e0=16;f0=16;}
else
{
if(num<1000)
{a0=num/100;b0=num%100/10;c0=num%10;d0=16;e0=16;f0=16;}
else
{
if(num<10000)
{a0=num/1000;b0=num%1000/100;c0=num%100/10;d0=num%10;e0=16;f0=16;}
else
{
if(num<100000)
{a0=num/10000;b0=num%10000/1000;c0=num%1000/100;d0=num%100/10;e0=num%10;f0=16;}
else
{
if(num<1000000)
{a0=num/100000;b0=num%100000/10000;c0=num%10000/1000;d0=num%1000/100;e0=num%100/10;f0=num%10;}
}
}
}
}
}
display(a0,b0,c0,d0,e0,f0);
}
}
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