ABSTRACT
The word simulation is derived from the Latin word simulare, which means pretend. Simulation is thus an inexpensive and safe way to experiment with the system model. The simulation results depend entirely on the quality of the system model. It is a powerful technique for solving a wide variety of problems. Simulation generally refers to a computerization of a developed model, which is run over time to study the implication of the defined interactions of the parts of the system. It is generally iterative in their development. One develops a model, simulates it, learns from the simulation, revises the model, and continues the iteration unit until an adequate level of understanding/accuracy is obtained. Simulation could play a more vital role in biology, sociology, economics, medicine, psychology, and engineering, where experimentation is very expensive, time consuming, and risky. Digital simulation refers to the simulation on a digital computer of the equations that describes a particular system.
