目录

1、前言

​ 2、程序

资料下载地址：单片机排队叫号系统Proteus仿真程序 有取号键和叫号键以及重复叫号键 有注释

1、前言

系统组成：STC89C52RC+Lcd1602+蜂鸣器+按键

具体介绍：

Lcd1602排队叫号系统，有取号显示窗和叫号显示窗。有取号键和叫号键以及重复叫号键。可以显示你前面有几人在等候。具体看图片上面。

 2、程序

void init()//初始化
{
	t0=0;
	windown=0;
	num=0;
	buzzer=1;
	TMOD=0x01;
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	EA=1;
	ET0=1;
	TR0=0;//定时器0	
	init_lcd2();
	init_lcd1();		
}

void main()
{
	init();
  	while(1)
  	{
	  
		display_lcd2(num);
  	}
}
void keyscan()//按键检测
{
	if(k0==0)//患者叫号按键检测
	{
		delay(10);//延时消抖
		if(k0==0)
			num++;//号码数加1
		while(!k0);
		delay(10);//延时消抖
		while(!k0);//按键松手检测
	}
	if(k1==0)//一号诊室呼叫
	{
		delay(10);
		if(k1==0)
		{
			if(num1<num)
			{
				windown=1;
				num1++;
				TR0=1;
				num2_1=num1;
				display_lcd1(num1,windown);//液晶一显示当前呼叫的号码
			}	
		}
		while(!k1);
		delay(10);//延时消抖
		while(!k1);//按键松手检测
	}
	if(k2==0)//二号诊室呼叫
	{
		delay(10);
		if(k2==0)
		{
			if(num1<num)
			{
				windown=2;
				num1++;
				TR0=1;
				num2_2=num1;
				display_lcd1(num1,windown);//液晶一显示当前呼叫的号码
			}	
		}
		while(!k2);
		delay(10);//延时消抖
		while(!k2);//按键松手检测
	}
	if(k3==0)//三号诊室呼叫
	{
		delay(10);
		if(k3==0)
		{
			if(num1<num)
			{
				windown=3;
				num1++;
				TR0=1;
				num2_3=num1;
				display_lcd1(num1,windown);//液晶一显示当前呼叫的号码
			}	
		}
		while(!k3);
		delay(10);//延时消抖
		while(!k3);//按键松手检测
	}
	if(k4==0)//四号诊室呼叫
	{
		delay(10);
		if(k4==0)
		{
			if(num1<num)
			{
				windown=4;
				num1++;
				TR0=1;
				num2_4=num1;
				display_lcd1(num1,windown);//液晶一显示当前呼叫的号码
			}	
		}
		while(!k4);
		delay(10);//延时消抖
		while(!k4);//按键松手检测
	}
	if(p1==0)//一号诊室重新呼叫
	{
		delay(10);
		if(p1==0)
		{
			TR0=1;
			display_lcd1(num2_1,1);			
		}
		while(!p1);
		delay(10);//延时消抖
		while(!p1);//按键松手检测
	}
	if(p2==0)//二号诊室重新呼叫
	{
		delay(10);
		if(p2==0)
		{
			TR0=1;
			display_lcd1(num2_2,2);			
		}
		while(!p2);
		delay(10);//延时消抖
		while(!p2);//按键松手检测
	}
	if(p3==0)//三号诊室重新呼叫
	{
		delay(10);
		if(p3==0)
		{
			TR0=1;
			display_lcd1(num2_3,3);			
		}
		while(!p3);
		delay(10);//延时消抖
		while(!p3);//按键松手检测
	}
	if(p4==0)//四号诊室重新呼叫
	{
		delay(10);
		if(p4==0)
		{
			TR0=1;
			display_lcd1(num2_4,4);			
		}
		while(!p4);
		delay(10);//延时消抖
		while(!p4);//按键松手检测
	}					
}

void write_order1(uchar order)//写指令函数	 液晶1
{
	rs1=0;
	en1=0;
	P0=order;
	delay(1);
	en1=1;
	delay(1);
	en1=0;	
}
void write_dat1(uchar dat)//写数据函数	 液晶1
{
	rs1=1;
	en1=0;
	P0=dat;
	delay(1);
	en1=1;
	delay(1);
	en1=0;	
}

void init_lcd1()//液晶1初始化
{
	write_order1(0x38);
	write_order1(0x0c);
	write_order1(0x06);
	write_order1(0x80+1);
//	write_order1(0x01);//液晶必备的一些初始化
	for(i=0;i<16;i++)
		write_dat1(table1_1[i]);
	write_order1(0x80+0x40); //液晶显示换行
	for(i=0;i<16;i++)
		write_dat1(table1_2[i]);	
}

void write_add1(uchar address,uchar dat)//指定地址写入数据
{
	write_order1(0x80+address);
	write_dat1(dat);
}

void display_lcd1(uint num1,uchar windown)//液晶1显示
{
	uchar a,b,c,d;//用于液晶
	a=num1/1000;
	b=num1%1000/100;
	c=num1%1000%100/10;
	d=num1%10;
	write_add1(4,table2[a]);
	write_add1(5,table2[b]);
	write_add1(6,table2[c]);
	write_add1(7,table2[d]);
	write_add1(0x40,table2[windown]);		
}
void write_order2(uchar order)//写指令函数	 液晶2
{
	rs2=0;
	en2=0;
	P1=order;
	delay(1);
	en2=1;
	delay(1);
	en2=0;	
}
void write_dat2(uchar dat)//写数据函数	 液晶2
{
	rs2=1;
	en2=0;
	P1=dat;
	delay(1);
	en2=1;
	delay(1);
	en2=0;	
}

void init_lcd2()//液晶2初始化
{
	write_order2(0x38);
	write_order2(0x0c);
	write_order2(0x06);
	write_order2(0x80);
	write_order2(0x00);
	for(i=0;i<12;i++)
		write_dat2(table2_2[i]);
	write_order2(0x80+0x40); //液晶显示换行
	for(i=0;i<12;i++)
		write_dat2(table2_1[i]);	
}

void write_add2(uchar address,uchar dat)//指定地址写入数据
{
	write_order2(0x80+address);
	write_dat2(dat);
}
void write_add3(uchar address,uchar dat)//指定地址写入数据
{
	write_order2(0x80+0x40+address);
	write_dat2(dat);
}
void display_lcd2(uint num)//液晶2显示
{
	uchar a,b,c,d;//用于液晶
	uchar e,f,g,h;//显示等待人数
	a=num/1000;
	b=num%1000/100;
	c=num%1000%100/10;
	d=num%10;
	write_add2(12,table2[a]);
	write_add2(13,table2[b]);
	write_add2(14,table2[c]);
	write_add2(15,table2[d]);
	if(num!=num1)	//显示前面等待的人数
	{
		e=(num-num1-1)/1000;
		f=(num-num1-1)%1000/100;
		g=(num-num1-1)%1000%100/10;
		h=(num-num1-1)%10;
	}
	else
	{
		e=(num-num1)/1000;
		f=(num-num1)%1000/100;
		g=(num-num1)%1000%100/10;
		h=(num-num1)%10;	
	}
	write_add3(12,table2[e]);
	write_add3(13,table2[f]);
	write_add3(14,table2[g]);
	write_add3(15,table2[h]);	
}

void timer0() interrupt 1
{
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	t0++;
	bi(100);
	if(t0>20)
	{
		TR0=0;
		t0=0;
		buzzer=1;
	}	
}