controller (n.)youdaoicibaDictYouDict[controller 词源字典]
late 14c., from Anglo-French contrerolleour (late 13c.), Old French contrerelleor (Modern French contrôleur), from Medieval Latin contrarotulator, agent noun from *contra-rotulare (see control (v.)). Mechanical sense is from 1867.[controller etymology, controller origin, 英语词源]