Introduction -- Description of continuous linear systems in the time, operator and frequency domain -- Description of continuous time systems in state space -- The negative feedback -- Stability of linear control systems -- Regulator design in the frequency domain -- Control of stable processes -- Design of conventional regulators -- Control systems with state feedback -- General polynomial method for controller design -- Sampled data control systems -- Sampled data controller design for stable discrete-time processes -- Design of conventional sampled data regulators -- State feedback in sampled data systems -- General polynomial method for the design of discrete-time Controllers -- Outlook