A logic circuit is an electrical circuit that uses logic gates to perform operations based on binary values, typically represented as 0 and 1. These circuits are fundamental in digital electronics, enabling devices like computers and smartphones to process information. Logic circuits can be classified into two main types: combinational circuits, which produce outputs based solely on current inputs, and sequential circuits, which consider past inputs as well. Logic gates, such as AND, OR, and NOT, are the building blocks of logic circuits. Each gate performs a specific logical function, allowing for complex decision-making processes. By combining these gates, engineers can create circuits that execute various tasks, from simple calculations to complex data processing in microprocessors.