A networkCentric core avionics machine consists of several harmonized components which work together to implement dependable computing in a simple way. In an NetworkCentric system we have a software network of BBs and a hardware Network interconnecting vehicles (radio communication), computers inside of vehicles (buses and point to point links), intelligent devices (attached to buses) and simple devices attached to front end computers. To communicate with (node) external units, including devices and other computing units, each node provides a gateway to the network and around the network's several devices (IO Devs and computing nodes) may be attached to the system.