Logic circuits are electronic circuits that perform logical operations based on Boolean algebra. They are composed of a combination of basic logic gates such as AND, OR, NOT, NAND, NOR, and XOR gates. These gates are connected together to perform various mathematical and logical operations such as addition, subtraction, multiplication, division, comparison, and data manipulation. Logic circuits are essential components in digital electronics and computing systems, allowing for the creation of complex functions and behaviors through the manipulation of binary signals. They are used in a wide range of applications including computers, smartphones, calculators, and digital control systems.