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1while(!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;}	
}