Field Programmable Gate Arrays (FPGAs) are integrated circuits that can be configured by the user after manufacturing. This flexibility allows engineers to design custom hardware for specific applications, making FPGAs ideal for prototyping and specialized tasks. FPGAs consist of an array of programmable logic blocks and interconnects, enabling users to create complex digital circuits. They are widely used in various fields, including telecommunications, automotive systems, and medical devices, due to their adaptability and performance.