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#include "reg52.h"
typedef unsigned int u16;
typedef unsigned char u8;
sbit a1=P3^2;
sbit a2=P3^3;
sbit a3=P3^4;
sbit a4=P3^5;
u8 code smgduan[17]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
u8 sec,min,ssec;
u8 DisplayData[4];
void delay(u16 i)
{
while(i--);
}
void Timer0Init()
{
TMOD|=0X01;
TH0=0Xd8;
TL0=0Xf0;
ET0=1;
EA=1;
TR0=1;
}
void DigDisplay()
{
u8 i;
for(i=0;i<4;i++)
{
switch(i)
{
case(0):
a1=0;a2=0;a3=0;a4=1; break;
case(1):
a1=0;a2=0;a3=1;a4=0; break;
case(2):
a1=0;a2=1;a3=0;a4=0; break;
case(3):
a1=1;a2=0;a3=0;a4=0; break;
}
P2=DisplayData[i];
delay(800);
P2=0xff;
}
}
void datapros()
{
DisplayData[0]=smgduan[ssec/10];
DisplayData[1]=smgduan[sec%10]&0x7f;
DisplayData[2]=smgduan[sec/10];
DisplayData[3]=smgduan[min%10]&0x7f;
}
void main()
{
Timer0Init();
while(1)
{
datapros();
DigDisplay();
}
}
void Timer0() interrupt 1
{
TH0=0Xd8;
TL0=0Xf0;
ssec++;
if(ssec>=100)
{
ssec=0;
sec++;
if(sec>=60)
{
sec=0;
min++;
if(min>=60)
{
min=0;
}
}
}
}
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