FPU's are also not just for Amigas. Any type of CPU (or micro) may have an FPU. Some processors have them built in as part of their instruction set, while others have to emulate the maths instructions (slowly). For example, AMD Athlons have the FPU instructions built in, while Durons do not. x86 machines are no longer fitted with a capacity for FPU expansion - they either have them in the CPU or not at all. External FPU's are also called maths-coprocessors. If you do anything requiring floating point mathematics, the FPU is invaluable.
