如何用C51单片机做出以下程序 “秒表是倒计时,从100秒开始倒计时 用数...答:假设P0 P2接数码管,静态驱动,程序如下:include<reg52.h> define uchar unsigned char define uint unsigned int uchar num=100;uchar time=0;//共阴数码管七段码 uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77};void Delay1ms(uint i) //1ms延时...
51单片机接2个led数码管,怎么让数码管倒计时?答:先看看下面程序,看懂了,就知道咋编了 include<reg52.h> define uchar unsigned char define uint unsigned int uchar a , b=0;sbit wei1=P1.0;sbit wei2=P1.1;//共阴数码管七段码 uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77};void Dela...
求两位数码管显示一个倒数时间的单片机程序,比如显示从99到0答://两位数码管显示倒计数99~00,51单片机。include<reg52.h> // 倒计数 define uint unsigned int define uchar unsigned char uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};uchar bai,shi;uint a1,a2;sbit D1=P3^...
51单片机两个阳极数码管显示24倒计时怎么显示00答:1、基于51单片机共阴两位数码管显示倒计时#includeunsigned char s=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;unsigned char count,d1,d2,g,y;signed int time=10; void delay(unsigned char i);void sm()d1=time/10;d2=time%10;P1=sd1;P3=0x00;delay(2);P3=0x01;P1...
51单片机数码管6秒倒计时c语言答:include <reg51.h> define KEY (P1&0x7)define SEG P2 define WEI P3 typedef unsigned char uint8;uint8 sec,min,ct,flag1,flag2;uint8 code dis[16]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,// 0 1 2 3 4 5 6 7 0x7F,0x6F,0x77,0x7C,0x39,...
AT89C51单片机60.00到00.00倒计时程序 4位数码管显示 C语..._百度知 ...答:AT89C51单片机60.00到00.00倒计时程序 4位数码管显示 C语... ncludereg52.h> #define uchar unsigned char #define uint unsigned int uchar num,t; sbit dula=P2^6; //段选跟位选 sbit wela=P2^7; uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //共阴数码管 ...