51单片机-实机演示（单多个数码管）

news2024/9/17 4:12:09

仿真链接： http://t.csdnimg.cn/QAPhx

一.引脚位置

二.多个显示

三扩展

一.引脚位置

注意P00 - >A ; 这个多个的在左边,右边的A到B是控制最右边那个单个的.

接下来上显示单个的代码

#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int

uchar code leddata[]={
	0x3F,  //"0"
    0x06,  //"1"
    0x5B,  //"2"
    0x4F,  //"3"
    0x66,  //"4"
    0x6D,  //"5"
    0x7D,  //"6"
    0x07,  //"7"
    0x7F,  //"8"
    0x6F,  //"9"
    0x77,  //"A"
    0x7C,  //"B"
    0x39,  //"C"
    0x5E,  //"D"
    0x79,  //"E"
    0x71,  //"F"
    0x76,  //"H"
    0x38,  //"L"
    0x37,  //"n"
    0x3E,  //"u"
    0x73,  //"P"
    0x5C,  //"o"
    0x40,  //"-"
    0x00  //熄灭
	};

void DelayMS(uint x)
{
 	uchar t;
	while(x--)
	for(t=120;t>0;t--);
}
 
void main()
{
 	uchar i=0;
	P0=0x00;
	while(i<24)
	{
	 	P0=leddata[i];
		i++;
		DelayMS(400);
	}
}

二.多个显示

再加上控制引脚: P22->A P23->B P24->C 引脚位置,主要看代码里面的定义.定义的是哪个就插在哪个引脚上.

代码奉上

#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar code leddata[]={
	0x3F,  //"0"
    0x06,  //"1"
    0x5B,  //"2"
    0x4F,  //"3"
    0x66,  //"4"
    0x6D,  //"5"
    0x7D,  //"6"
    0x07,  //"7"
    0x7F,  //"8"
    0x6F,  //"9"
    0x77,  //"A"
    0x7C,  //"B"
    0x39,  //"C"
    0x5E,  //"D"
    0x79,  //"E"
    0x71,  //"F"
    0x76,  //"H"
    0x38,  //"L"
    0x37,  //"n"
    0x3E,  //"u"
    0x73,  //"P"
    0x5C,  //"o"
    0x40,  //"-"
    0x00  //熄灭
	};

 //定义数码管位选信号控制脚
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;

void DelayMS(uint x)
{
	while(x--);
}
void delay(unsigned int t)
{
    unsigned int i, j;
    for (i = 0; i < t; i++) {
        for (j = 0; j < 1275; j++) {
            ; // 空循环，等待时间过去
        }
    }
}
void main()
{
 	uchar i=0;
	P0=0x00;
	while(1)
	{
		for (i = 0; i < 8; i++)
		{
			switch (i)
			{
				case 0: LSC=1;LSB=1;LSA=1;break;
				case 1: LSC=1;LSB=1;LSA=0;break;
				case 2: LSC=1;LSB=0;LSA=1;break;
				case 3: LSC=1;LSB=0;LSA=0;break;
				case 4: LSC=0;LSB=1;LSA=1;break;
				case 5: LSC=0;LSB=1;LSA=0;break;
				case 6: LSC=0;LSB=0;LSA=1;break;
				case 7: LSC=0;LSB=0;LSA=0;break;
			}
			P0 =leddata[i];
			DelayMS(100);
			P0=0x00;
		}
			
	
	}
}