EM> (DCS) A digital computer used for real-time control of a dynamic systEM, usually in an industrial environment, possibly as part of a {Supervisory Control and Data Acquisition} (SCADA) systEM. A DCS samples feedback from the systEM under control and modifies the control signals in an attEMpt to achieve some desired behaviour. Analysis of such digital-analogue feedback systEMs can involve mathEMatical methods such as difference equations, {Laplace transforms}, {z transfer functions}, {state space models} and state transition matrices. (2004-08-22)