Defination of System : Types of system-continous and discrete; Modeling process and defination of a model; Compurter work load and preparerating of its models; Verification and validation modeling procedures;l comparing model data with real system. Simulation Process: Use of simulation discrete and continuous simulation procedures; simulation of a time sharing computer system. Simulation languages: A brief introduction to important discrete and continuous simulation language; Algorithm development and pseudo code writing for simulation problems. Use of database and A.I. techniques in the area of modeling and simulation.