noun
variable function generator
Technical term in computing and electronics for a device or circuit that produces a function whose parameters can be varied.
この可変関数発生器は、任意の波形を出力できます。
This variable function generator can output arbitrary waveforms.
Compound of 可変 (variable), 関数 (function), and 発生器 (generator). A straightforward technical term with no special historical derivation.