Real-time

Real time. Performance of an apparatus whose operation must ensure reduced processing and response times, i.e. having orders of magnitude equal to or less than those of the observed phenomena, of the variations of the environment and of the controlled processes. Computerized system in which the temporal specifications of correctness, speed and coordination of processing between processes take on essential relevance, in relation to even unexpected inputs. For example, they must operate in real time the traffic management equipment, on the ground and on board the trains, as they are strictly dependent on the temporal characteristics, safety and functional complexity of the system to be controlled. Real-time computerized systems are typically defined as those that control industrial processes (process systems), usually distinct from those required in corporate IT processes (management systems). Therefore, the response times of a real-time processing, to be effective, must be lower than the intervals of variation of the input quantities, acquired from the environment or from the connected systems. Often synonymous, generic and reductive, of a very fast processing system, in which the user hardly notices waiting times