#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit duxu=P2^6;
sbit wexu=P2^7;
uint num;
uchar bai,shi,ge,temp;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void yanshi(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void xianshi(uint shu);
void main()
{
duxu=1;
P0=0;
duxu=0;
while(1)
{
P3=0xfe;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
yanshi(5);
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xee:num=1*1;
break;
case 0xde:num=2*2;
break;
case 0xbe:num=3*3;
break;
case 0x7e:num=4*4;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
}
}
}
xianshi(num);
P3=0xfd;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
yanshi(5);
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xed:num=5*5;
break;
case 0xdd:num=6*6;
break;
case 0xbd:num=7*7;
break;
case 0x7d:num=8*8;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
}
}
}
xianshi(num);
P3=0xfb;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
yanshi(5);
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xeb:num=9*9;
break;
case 0xdb:num=10*10;
break;
case 0xbb:num=11*11;
break;
case 0x7b:num=12*12;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
}
}
}
xianshi(num);
P3=0xf7;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
yanshi(5);
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xe7:num=13*13;
break;
case 0xd7:num=14*14;
break;
case 0xb7:num=15*15;
break;
case 0x77:num=16*16;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
}
}
}
xianshi(num);
}
}void xianshi(uint num)
{
ge=num%10;
shi=num%100/10;
bai=num/100;
wexu=1;
P0=0xfb;
wexu=0;
P0=0xff;
duxu=1;
P0=table[ge];
duxu=0;
yanshi(5);
wexu=1;
P0=0xfd;
wexu=0;
P0=0xff;
duxu=1;
P0=table[shi];
duxu=0;
yanshi(5);
wexu=1;
P0=0xfe;
wexu=0;
P0=0xff;
duxu=1;
P0=table[bai];
duxu=0;
yanshi(5);
}
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