病床上的呼叫怎么用51单片机病房呼叫器（8位病床）

#include<reg51.h>  
#define uchar unsigned char
#define uint unsigned int
sbit LED=  P3^0;      //定义LED指示灯接口
sbit BUZZER =  P3^3;  //蜂鸣器接口
sbit key=  P3^7;      //清除按键
 
sbit led1 =  P2^0;
sbit led2 =  P2^1;
sbit led3 =  P2^2;
sbit led4 =  P2^3;
sbit led5 =  P2^4;
sbit led6 =  P2^5;
sbit led7 =  P2^6;
sbit led8 =  P2^7;
uint array[10]={1,1,1,1,1,1,1,1,1};
 
 
 
uchar code table[16]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};//共阳数码管编码
uchar Key_scan() //扫描按键
{
  static uchar key_down;
  uchar t=200;
  uchar key_num=0xff,tem,i; 
  uchar keynum_tab[14]={0x7e,0xd7,0xb7,0x77,0xdb,0xbb,0x7b,0xdd,0xbd,0x7d,0xde,0xbe,0x7e};//表格数据是根据按键值和个按键的定义的出来的
  P1 = 0xf0;
  if(P1 != 0xf0)//说明有按键按下
  
      }
      return i;
        
    }
    else
      return 0xff;             
  }  
  else
  {
    key_down = 0;
    return 0xff;    
  }  
  
}
 //刷新显示num
 void Dispaly(uchar num)
 
   if(array[1]==0){
     led1=0;
   }
   if(array[2]==0){
     led2=0;
   }
   if(array[3]==0){
     led3=0;
   }
   if(array[4]==0){
     led4=0;
   }
   if(array[5]==0){
     led5=0;
   }
   if(array[6]==0){
     led6=0;
   }
   if(array[7]==0){
     led7=0;
   }
   if(array[8]==0){
     led8=0;
   }
   
 }
/*主函数*/              
void main(void)

    if(key==0)//清零键按下
    else if(House_num==2){
            array[2]=1;
            led2=1;
        }else if(House_num==3){
            array[3]=1;
            led3=1;
        }else if(House_num==4){
            array[4]=1;
            led4=1;
        }else if(House_num==5){
            array[5]=1;
            led5=1;
        }else if(House_num==6){
                    array[6]=1;
                    led6=1;
        }else if(House_num==7){
                    array[7]=1;
                    led7=1;
        }else if(House_num==8){
                    array[8]=1;
                    led8=1;
       }*/
    
       switch(House_num){
         case 1:
                array[1]=1; 
                led1=1;
                break;
         case 2:
                array[2]=1;
                led2=1;
                break;
         case 3:
                array[3]=1;
                led3=1;
                break;
         case 4: 
                array[4]=1;
                led4=1;
                break;
         case 5:
                array[5]=1;
                led5=1;
                break;
         case 6:
                array[6]=1;
                led6=1;
                break;
         case 7:
                array[7]=1;
                led7=1;break;
         case 8:
                array[8]=1;
                led8=1;
                break;
         default:
                break;
       }
        House_num=0;//清除房间号   
       
    }
    }
    
     for(j=1;j<9;j++)
   }
    Dispaly(House_num);//显示相应的房间号 
  }
}