定时计数器数码管.c

51单片机入门级资料。流水灯

#include<reg52.h>
#define uchar unsigned char
sbit duan=P2^6;
sbit wei=P2^7;
uchar duantable[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00}; 
uchar i;
void main()
{
	EA=1;
	TMOD=0x01;
	ET0=1;
	TR0=1;
	TH0=0xd8;
	TL0=0xdd;
	while(1);

}

void timerupt() interrupt 1
{
	TH0=0xd8;
	TL0=0xdd;
	if(i==16)
		i=0;
	P0=0xff;
	wei=1;
	wei=0;
	P0=duantable[i];
	duan=1;
	duan=0;
	P0=0x00;
	wei=1;
	wei=0;
	i++;


}