#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar num,bai,shi,ge;
uint z,aa;
sbit dula=P2^6;
sbit wela=P2^7;
void delay(uint);
void init ();
void deplay(uchar a,uchar b,uchar c);
uchar code table[]={0x3f,0x06,0x5b,0x4f,
0x66,0x6b,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void main()
{
init();
while(1)
{
if(aa==2)
{
aa=0;
if(bai!=0)
{
num--;
shi=num/10;
ge=num%10;
if(num==0)
bai--;
}
}
deplay(bai,shi,ge);
}
}
void init()
{
num=99;
bai=9;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void deplay(uchar bai,uchar shi,uchar ge)
{
dula=1;
P0=table[bai];
dula=0;
dula=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(5);
dula=1;
P0=table[shi];
dula=0;
dula=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(5);
dula=1;
P0=table[ge];
dula=0;
dula=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(5);
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=100;y>0;y--);
}
void t0_time() interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
aa++;
}
在數碼管上顯示的不對
大神們看看
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