求89C51单片机简单中断程序,用C语言编写,题目如图答:include<reg51.h>#include "intrins.h"#include "absacc.h"#define uchar unsigned charuchar ledtab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40,0xff};//0-9uchar num,cnt;bit flag=0;void ext1() interrupt 2{flag=~flag;}void t1isr() interrupt 3//显示{...
单片机C语言外部中断程序问题,高手进答:外部中断,要求是低电平/下降沿触发。你应该把按键改成接地,不要接电源。另外,程序缺少延时,这样,按一下键,会加上很多次的。试试如下程序:include <reg52.h> unsigned char code tab[] = { 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};unsigned char a, b, c;//---...