الملخص

With the development of information technology and the use of its applications as an essential aspect in almost all patterns of life especially in fields of analysis and real time systems, a problem of controlling resources appeared and how to provide the system with the resources at a proper time to avoid the system to be failed or vanishes , a state called a deadlock. This research aims to use the modern concept of Petri Net to provide synchronization and coordination between systems having more than one processor , sharing  a specific resources at a same time. The research concentrates on capability of applying feed backing concept of Petri Net to achieve a good synchronization between different systems to work efficiently without being in deadlock.