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#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,
0x79,0x71};
void delayms(uint);
void display(uchar,uchar);
uchar num,num1,shi,ge;
void main()
{
TMOD=0x01; //设置定时器0位工作方式。
TH0=(65536-45872)/256; //装初值。
TL0=(65536-45872)%256;
EA=1; //开总中断。
ET0=1; //开定时器0中断。
TR0=1; //启动定时器0.
while(1)
{
display(shi,ge); //
}
}
void display(uchar shi,uchar ge)
{
dula=1;
P0=table[shi];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delayms(5);
dula=1;
P0=table[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delayms(5);
}
void T0_time() interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
num++;
if(num==20);
{
num=0;
num1++;
if(num1==60);
shi=num1/10;
ge=num1%10;
num1=0;
}
}
void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
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