The course will provide an introduction and background on the main components and techniques of a communication systems. This part will cover fundamentals of signals and transmisison over wired (cables) and wireless (radio) media. The secon part of the course will review multiple access techniques and some performance metrics. Finally, the main part of the course will be dedicated to a description of the main communication systems in the local environment as well as in the global connectivity. Among the first, emphasys will be given to local area networks, their topology and performance. Applications in industrial environments will be more specifically addressed together with exploitation of sensors to support control systems. Global coverage systems will encompass telephone networks (both fixed and mobile/cellular) and the Internet.