51单片机设计数码管显示时钟的程序怎么写答:include<reg51.h>#define uchar unsigned charuchar code ledtab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};//0-9unsigned char sec=0,min=0,hour=12,scanled;unsigned char key,flashbit,mode,time; unsigned char disdat[8];sbit led=P1^0;void delay(...
51单片机试题,写一个用单个数码管显示10秒倒计时的程序,急!!!答:include <reg52.h> define uchar unsigned char define uint unsigned int sbit duan=P2^6;sbit wei=P2^7;uchar disp=0;uchar time=10;int miao=0;uchar code dispcode[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; //段...
求编程实现倒计时的秒表,2位LED数码管显示,延时采用硬件延时的方法_百 ...答:用单片机的定时器T0定时,计时1秒,实现倒计时的秒表的功能。程序如下 include<reg51.h> unsigned char code tab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//共阳数码管段码表 unsigned char second;//秒倒计时变量 unsigned char t0n;//T0中断次数计数 sbit k1=P3^2;/...
...编写程序使89C52单片机实现数字时钟功能,显示时分秒的数码管...答:当一盘好人,给个例程,自己研究吧¬¬include<reg52.h> char code duma[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40}; //0-9数码管,共阴 char code wema[]={0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7}; //片选,1-8个数码管 char j;char...
51单片机30秒倒计时,用数码管显示的,c程序,元件只有at89c51和数码管,没...答:include<reg52.h> define uint unsigned int define uchar unsigned char sbit dula=P2^6;sbit wela=P2^7;sbit d1=P1^0;uchar num,num1;tt;uchar code table[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void delay(uint z);vo...