Logic circuits are fundamental components in electronics that perform logical operations on binary inputs. They use basic building blocks like AND, OR, and NOT gates to process information. Each gate has a specific function: for example, an AND gate outputs true only if all its inputs are true, while an OR gate outputs true if at least one input is true. These circuits are essential in creating more complex systems, such as computers and digital devices. By combining multiple logic gates, engineers can design circuits that execute various tasks, from simple calculations to complex decision-making processes, enabling the functionality of modern technology.