STC51单片机数码管显示程序和仿真

STC51单片机数码管显示程序和仿真

在这里插入图片描述

  • 仿真使用的数码管时共阴极

1、共阳：

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char code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};

2、共阴：

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char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

  • 单片机P0口一定要加上拉电阻，不接的话无法点亮数码管
  • 主程序.c
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#include "reg51.h"

typedef unsigned char u8;
typedef unsigned int u16;

 unsigned char code Seg_Tab[]  = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
					  //共阴0-F段码，加code是存在rom里面

void delay(u16 k);
void Seg\_display(unsigned int val);

void main(){	
	
	while(1){
	Seg\_display(9527);
	}
	
}


void Seg\_display(unsigned int val){
 unsigned char i,dia_data;
	for(i=0;i<4;i++){
	dia_data = val % 10;
		val =val/10 ;
		P0 = Seg_Tab[dia_data];
		P1 = i;
		delay(50000);
	}
}

void delay(u16 k)
{	
	while(k--);	 
}



  • 程序和仿真文件
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链接：https://pan.baidu.com/s/1gHqetaE8yc7v-0TPuQtoJw 
提取码：3zzm