designers will find this the inappropriateness of this design for future development stages, sooner
or later. Provided our system under discussion is a normal centralized system where every
component (software and/or hardware) is controlled by one processor, our current class diagram
solution may not cause future design defects. However, the nature of being a distributed
embedded system determines that the class diagram merely from the point of view of objects in
the elevator system is not adequate.