Question

单片机中利用中断程序做出按键按下显示数字，逐次加一，从一到九

Answer 1

#include<reg51.h>
#define uchar unsigned char;
uchar distab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};  //0到f
uchar dat;
void t1isr() interrupt 0
{
	dat++;
	dat%=10;
	P0=distab[dat];
}
main()
{
        IT0=1;
        EX0=1;
	EA=1;
	while(1);
}