noun
numeric coprocessor; numeric data processor
A specialized processor that handles floating-point arithmetic, historically used to accelerate mathematical operations in computers.
昔のパソコンには数値演算コプロセッサが別チップで搭載されていた。
Older PCs had a numeric coprocessor installed as a separate chip.
FPU (Floating-Point Unit) is the modern integrated equivalent, while 数値演算コプロセッサ often refers to the older discrete chip.
Compound of 数値 (numeric value), 演算 (operation), and コプロセッサ (coprocessor), a direct calque from English.