书接上回 51单片机-数码管显示单个

http://t.csdnimg.cn/Ii6x0

一.简单全亮

ps:有好几次没电亮,是没加阻值,看了这方面的基础要好好补补了.

这种是不需要控制哪个亮,全部接了电.直接用上一篇的代码,就可以每个都动态变化

#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.控制单个变化

就是分别控制 1234引脚了

#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;
	P2 =0xfe;
	while(i<24)
	{
	 	P0=leddata[i];
		i++;
		DelayMS(400);
	}
}

这样就可以做很多小显示了,比如2024;

三.2024

#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 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 < 5; i++)
		{
			switch (i)
			{
			case 0:
				P0 = 0x5B;
				P2 =0xFE;  //1111 1110
				break;
			case 1:
				P0 = 0x3F;
				P2 =0xFD;//1111 1101  
				break;
			case 2:
				P0 =0x5B;
				P2 =0xFB;//1111 1011  
				break;
			case 3:
				P0 =0x66;
				P2 =0xF7;//1111 0111 
				break;
			
			default:
				break;			
			}
				
			delay(1);
			P0=0x00;
		}
			
	
	}
}