public Computer()
 {
     _mb  = new MotherBoard();
     _cpu = new Cpu();
     _ram = new Ram();
     _hd  = new HardDrive();
     _ps  = new PowerSupply();
 }
 public TabletAndPhone()
 {
     _mb      = new MotherBoard();
     _cpu     = new Cpu();
     _ram     = new Ram();
     _Screen  = new Screen();
     _Battery = new Battery();
 }
 public Componet()
 {
     _mb  = new MotherBoard();
     _cpu = new Cpu();
     _ram = new Ram();
 }