/* Complex parts */
class CPU:
  def freeze():
    pass
  def jump(to_position):
    pass
  def execute():
    pass
  
class Memory:
    def load(to_position, with_data):
      pass

class HardDrive:
    def read(lba, size) -> bytes:
      pass

BOOT_SECTOR = ""
SECTOR_SIZE = 32
# Facade
class ComputerFacade {
    
    def __init__(self) {
        self.processor = CPU()
        self.ram = Memory()
        self.hd = HardDrive()
    }

    def start(self) {
        self.processor.freeze();
        self.ram.load(BOOT_ADDRESS, self.hd.read(BOOT_SECTOR, SECTOR_SIZE));
        self.processor.jump(BOOT_ADDRESS);
        self.processor.execute();
    }
}

/* Client */
computer = ComputerFacade();
computer.start();