普中科技51纯代码（数码管）

Posted 2022-12-02 贩卖星辰点点

数码管

• • 1.点亮一个数码管
  • 2.点亮两个数码管
  • 3.显示八个数码管
  • 4.一位数码管倒计时
  • 5.两位数码管倒计时

1.点亮一个数码管

#include <reg51.h>//阴极数码管

typedef unsigned char u8;
typedef unsigned int u16;

sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;

u8 code smgduan[]=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71
						;

void main()

	while(1)
	
	   	LSA=0;           //这里是开发板上的段选芯片，选择最后一个数码管
		LSB=0;			//平时点亮一个数码管，正常点亮即可
		LSC=0;		
		P0=smgduan[5];
	
	

2.点亮两个数码管

#include <reg51.h>

typedef unsigned char u8;
typedef unsigned int u16;

u8 code smgduan[]=0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F;


sbit SLA=P2^2;
sbit SLB=P2^3;
sbit SLC=P2^4;

void delay(u16 i)

	while(i--);



void DigDisplay()

 	u8 i;
	for(i=0;i<2;i++)
	
		switch(i)
		
			case(0):SLA=0;SLB=0;SLC=0;break;

			case(1):SLA=1;SLB=0;SLC=0;break;

			default: break;
		
		 P0=smgduan[i];
		 delay(100);
		 P0=0X00;

		


void main()

	while(1)
	
	   DigDisplay();
	
	

3.显示八个数码管

#include <reg51.h>

typedef unsigned char u8;
typedef unsigned int u16;

u8 code smgduan[]=0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F;


sbit SLA=P2^2;
sbit SLB=P2^3;
sbit SLC=P2^4;

void delay(u16 i)

	while(i--);



void DigDisplay()

 	u8 i;
	for(i=0;i<8;i++)
	
		switch(i)
		
			case(0):SLA=0;SLB=0;SLC=0;break;

			case(1):SLA=1;SLB=0;SLC=0;break;

			case(2):SLA=0;SLB=1;SLC=0;break;

			case(3):SLA=1;SLB=1;SLC=0;break;

			case(4):SLA=0;SLB=0;SLC=1;break;

			case(5):SLA=1;SLB=0;SLC=1;break;

			case(6):SLA=0;SLB=1;SLC=1;break;

			case(7):SLA=1;SLB=1;SLC=1;break;

			default: break;
		
		 P0=smgduan[i];
		 delay(100);
		 P0=0X00;

		


void main()

	while(1)
	
	   DigDisplay();
	
	

4.一位数码管倒计时

#include <reg51.h>

typedef unsigned char u8;
typedef unsigned int u16;

u8 code smgduan[]=0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F;

sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;


void delay(u16 i)

	while(i--);




void main()
	
	u16 m;

	LSA=0;
	LSB=0;
	LSC=0;

	
	while(1)
	
	   	for(m=9;m>0;m--)
		
			P0=smgduan[m];
			delay(50000);
		
	
	
	
 

5.两位数码管倒计时

#include<reg52.h>
typedef unsigned char u8;
typedef unsigned int u16;

sbit LSA = P2^2;
sbit LSB = P2^3;
sbit LSC = P2^4;
sbit beep= P2^7;
u8 code smgduan[10] = 
		0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,
;			//共阴

u16 n = 0;
u16 m = 99;

void Timer0Init(void)		//1毫秒@11.0592MHz

	TMOD &= 0xF0;		//设置定时器模式	定时器0 是 13位的
	TL0 = 0x30;		//设置定时初值
	TH0 = 0xE3;		//设置定时初值
	TF0 = 0;		//清除TF0标志
	TR0 = 1;		//定时器0开始计时


void   DIGdisplay()

	 u8 i;
	 for (i=0;i<2;i++)
	 
	 	switch(i)
			case(0): LSA = 0 ;LSB = 1 ; LSC = 1 ;P0 = smgduan[m/10] ; break; //6
			case(1): LSA = 1 ;LSB = 1 ; LSC = 1 ;P0 = smgduan[m%10]    ; break; //7 第八个			
																	 
		P0 =0X00;
	 


void Delay200us()		//@11.0592MHz

	unsigned char i, j;
	for(i=99;i>0;i--)
		for(j=0;j<110;j++);	 

/*	i = 3;
	j = 35;
	do
	
		while (--j);
	 while (--i);
  */

void warning()

	beep = ~beep;
	Delay200us();


void main()

	 Timer0Init();
	 ET0 = 1;
	 EA  = 1;
	 P0 = 0x00;
	 while(1)
	 	DIGdisplay();
	 


void InterruptTime0() interrupt 1

	TL0 = 0x30;		//设置定时初值
	TH0 = 0xE3;
	n++;
	if (n == 1000) 
	n = 0;
	if(m != 0) m--;
	
	if(m == 0)  warning();

//代码书写有参考，侵权立删