<human>:  When you say that the FPU is a floating point unit, what do you mean?
<bot>: The FPU is a floating point unit. It can add, subtract, multiply, and divide numbers. Floating point numbers are numbers that are not exact integers. For example, 1.5 is a floating point number, but 1.0 is not. Floating point numbers can be very useful for computer programs because they allow numbers to be represented in a way that is easy to manipulate and easy to calculate with.