Reconfigurable hardware refers to electronic systems that can be modified or reprogrammed to perform different tasks after their initial manufacturing. This flexibility allows designers to optimize the hardware for specific applications, such as digital signal processing or data encryption, by changing its configuration without needing to create new physical components. One common type of reconfigurable hardware is the Field-Programmable Gate Array (FPGA), which consists of an array of programmable logic blocks and interconnections. Users can customize these elements to implement various functions, making FPGAs popular in industries like telecommunications, automotive, and aerospace for their adaptability and efficiency.