Single-chip microcomputer control of four digital tube on the left two since plus right out how to modify the program - this program seems to only start bits and don't know how to locate to a one hundred - bit gradually since the add



# include
# define uchar unsigned char
# define uint unsigned int
# define ziwei P2
# define ziduan P0
Uchar code Led []={xa4 xc0 0, 0 xf9, 0, 0 xb0, 0 x99, 0 x92, 0 x82, 0 xf8, 0 x80, 0 x90};
Uchar code hang []={0 x01, 0 x02, 0 x00 to 0 x00};
Uchar buffer [4].
Uint count;
Uint oldCount;
Unsigned char I;

Void delay ()
{unsigned char (I); for(i=0; i<0 x40; i++);
}
Void num ()
{
Buffer [0]=count/1000% 10;
Buffer [1]=count/100% 10;

}
Void xianshi ()
{
uchar i;
for(i=0; i<4. I++)
{
Ziwei=~ hang [I];
Led [buffer ziduan=[I]];
Delay ();
Ziduan=0 XFF;
}
}
Void main ()
{count=0;
OldCount=oldCount + 1;
TMOD=0 x01;
TH0=(65536-20000)/256;
TL0=(65536-20000) % 256;
EA=1;
ET0=1;
I=0;
TR0=1;
While (1)
{if (oldCount!=count)
{
OldCount=count;
Num ();
} xianshi ();
}
}
Void time0_int (void) interrupt 1 {
TH0=(65536-20000)/256;
TL0=(65536-20000) % 256;
i++;
If (i>=50) {
I=0;
If (count>=19) count=0;

count++;

}
}