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51单片机-实机演示（单多个数码管）

news 2025/7/19 13:05:05

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 intuchar 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;}}
}