sentences:  The Advanced Floating Point Processor (AFPP) (μPD72691) is a co-processor for floating-point arithmetic operations.The V60/V70/V80 themselves can perform floating-point arithmetic, but they are very slow because they lack hardware dedicated to such operations.In 1989, to compensate V60/V70/V80 for their fairly weak floating-point performance, NEC launched this 80-bit floating-point co-processor for 32-bit single precision, 64-bit double precision, and 80-bit extended precision operations according to IEEE 754 specifications.