from machine import Pin



number = int(input("Enter number(0-7): "))

if number>-1 and number<8:
  
  binary = str(bin(number))
  reverse_binary_string = ""
  for i in range(len(binary)-1,-1,-1):
    if binary[i]=="b":
      continue
    else:
      reverse_binary_string+=binary[i]

  print("decimal = ",number,", reverse binary = ",reverse_binary_string)
  pins = [
    Pin(21,Pin.OUT),
    Pin(19,Pin.OUT),
    Pin(18,Pin.OUT),
  ]

  x = -1
  for i in reverse_binary_string:
    if i=="1":
      pins[x].on()
    x-=1
else:
  print("its a 3 bit binary so it won't support this value try to enter the number between 0-7")


# https://wokwi.com/projects/368703147156440065