51 MCU water tower schematic diagram and source program

The source program of the single chip microcomputer is as follows:
#include
//Define an array so that the numbers displayed by the digital tube are equal to the subscripts of the array elements
unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,
                            0x6d,0x7d,0x07,0x7f,0x6f};
sbit shuiman=P1^0;//water full
sbit sw5=P1^1;//water level 5
sbit sw4=P1^2;//water level 4 sbit sw3=P1^
3;//water level 3
sbit sw2=P1^4;//water level 2
sbit sw1=P1^5;//water level 1
sbit shougong=P1^6;//manual water filling
sbit dianji=P1^7;//motor control
bit sbit state=P3^7;//Motor working indication
/*Delay program*/
void delay02s(void)
{
  unsigned char i,j,k;
  for(i=100;i>0;i--)
  for(j=100;j>0;j--)
  for(k=248;k>0;k--);
}
main()
{
  P0=0;
  while(1)
    { /*************************The sensor is designed to trigger only one sensor unit at a time?****************************
        //Water fullif
      (shuiman==0&&sw5==1&&sw4==1&&sw3==1&&sw2==1&&sw1==1)//Occurs when only one sensor unit is closed: water level 6
      {
        dianji=1;//Turn off the motorstate
        =1;//The motor working indicator light goes outP0
            =table[6];//Show water level depth: 6**** Full
        delay02s(); // Delay for a while to let the digital tube display a prompt: the water is full
      }
        // Water level 5
      if(shuiman==1&&sw5==0&&sw4==1&&sw3==1&&sw2==1&&sw1==1)// Occurs when only one sensor unit is closed: water level 5
      {
        P0=table[5]; // Display water level depth: 5
      }
      // Water level 4
      if(shuiman==1&&sw5==1&&sw4==0&&sw3==1&&sw2==1&&sw1==1)// Occurs when only one sensor unit is closed: water level 4
      {
        P0=table[4]; // Display water level depth: 4
      }
      // Water level 3
      if(shuiman==1&&sw5==1&&sw4==1&&sw3==0&&sw2==1&&sw1==1)//When only one sensor unit is closed: water level 3
      {
          P0=table[3]; //Display water level depth: 5
      }
      //Water level 2
        if(shuiman==1&&sw5==1&&sw4==1&&sw3==1&&sw2==0&&sw1==1)//When only one sensor unit is closed: water level 2
      {
        P0=table[2]; //Display water level depth: 2
      }
      //Water level low
      if(shuiman==1&&sw5==1&&sw4==1&&sw3==1&&sw2==1&&sw1==0)//When only one sensor unit is closed: water level 1
      {
        dianji=0;//turn on the motor
        state=0;//the motor working indicator light turns on
      P0=table[1];//displays the water level depth: 1
      }
      //manual water
        fillingif(shougong==0)//occurs when the manual water filling button is pressed
      {  
          dianji=0;//turn on the motor
        state=0;//the motor working indicator light turns on
        P0=table[0];//displays 0, indicating that manual water filling has responded
        delay02s();//delay for a period of time to let the digital tube display a prompt: manual water filling has started
      }
   
    }
   
}