#include <>
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P2^7;
sbit dianji=P1^7;
sbit jia_key=P3^6;
sbit jian_key=P3^7;
uchar num=0,show_num=1,gao_num=1,di_num=3;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay(uchar i)
{
uchar j,k;
for(j=i;j>0;j--)
for(k=125;k>0;k--);
}
void display()
{
dula=0;
P0=table[show_num];
dula=1;
dula=0;
wela=0;
P0=0xfe;
wela=1;
wela=0;
delay(5);
P0=table[0];
dula=1;
dula=0;
P0=0xfd;
wela=1;
wela=0;
delay(5);
P0=table[0];
dula=1;
dula=0;
P0=0xfb;
wela=1;
wela=0;
delay(5);
P0=table[0];
dula=1;
dula=0;
P0=0xf7;
wela=1;
wela=0;
delay(5);
}
void key ()
{
if(jia_key==0)
{
delay(5);
if(jia_key==0)
{
num++;
if(num==4)
num=3;
while(jia_key==0);
}
}
if(jian_key==0)
{
delay(5);
if(jian_key==0)
{
if(num!=0)
num--;
else
num=0;
while(jian_key==0);
}
}
}
void dispose()
{
switch(num)
{
case 0:
show_num=1;
gao_num=1;
di_num=3;
break;
case 1:
show_num=2;
gao_num=2;
di_num=2;
break;
case 2:
show_num=3;
gao_num=3;
di_num=1;
break;
case 3:
show_num=4;
gao_num=4;
di_num=0;
break;
}
}
void qudong()
{
uchar i;
if(di_num!=0)
{
for(i=0;i<di_num;i++)
{
dianji=0;
display();
}
}
for(i=0;i<gao_num;i++)
{
dianji=1;
display();
}
}
void main()
{
while(1)
{
dianji=0;
key();
dispose();
qudong();
}
}
