This document discusses sensors and simulation in computer integrated manufacturing. It defines sensors as devices that measure physical quantities and convert them into signals. It describes different types of sensors and their applications. The document also defines simulation as modeling real-world systems using software to evaluate performance before physical implementation. It discusses static vs dynamic and continuous vs discrete simulation. It covers deterministic and stochastic simulation approaches. The document outlines simulation methodology, languages, and software packages. It highlights advantages of simulation and applications in various industries.