#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code DSY_CODE[]=
{
0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x7f,0x6f,0x00
};
uchar Display_Buffer[3]={0,0,0};
uint Count = 0;
sbit Clear_Key = P3^6;
void Show_Count_ON_DSY()
{
Display_Buffer[2] = Count / 100;
Display_Buffer[1] = Count % 100 /10;
Display_Buffer[0] = Count % 10;
if(Display_Buffer[2]==0)
{
Display_Buffer[2] = 0x0a;
if(Display_Buffer[1]==0)
{
Display_Buffer[1]=0x0a;
}
}
P0 = DSY_CODE[Display_Buffer[0]];
P1 = DSY_CODE[Display_Buffer[1]];
P2 = DSY_CODE[Display_Buffer[2]];
}
void main()
{
P0 = 0xff;
P1 = 0xff;
P2 = 0xff;
IE = 0x81;
IT0 = 1;
while(1)
{
if(Clear_Key == 0)
Count = 0;
Show_Count_NO_DSY();
}
}
void EX_INT0() interrupt 0
{
Count ++;
}
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