Which of the following describes an FPGA?

The statement accurately characterizes an FPGA, or Field-Programmable Gate Array, as an integrated circuit that is specifically designed to be configured and reconfigured after manufacturing. This unique feature allows users to customize the hardware design to meet specific application requirements or functionality, making FPGAs incredibly versatile for various applications in fields like telecommunications, automotive, and digital signal processing.

Unlike traditional integrated circuits, which have fixed functions determined at the time of manufacturing, FPGAs enable flexibility, allowing developers to reprogram the hardware as needed without the necessity for physical alterations to the chip. This is particularly valuable in rapid development environments or when adjustments are needed after deployment.

In contrast, the other options describe components or concepts which do not align with the definition of an FPGA. Some represent fixed-function devices or entirely different categories of technology, like computer viruses or memory storage devices, that do not offer the same reconfigurable capabilities.