System Modeling and Simulation: An IntroductionSystem Modeling is the describing in mathematical terms any real system. In engineering terms, the systems may be electrical, electronic, industrial, and chemical. Simulation is the mimicking of the operation of a real system that gives information about the system being investigated. The activities of the model consist of events, or inputs and outputs, which are activated at certain points in time and in this way affect the overall state of the system. The simulation approach of analyzing a model is opposed to the analytical approach, where the method of analyzing the system is purely theoretical.