Keyboard operator (6)
I believe the answer is:
typist
'keyboard operator' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for typist that I've seen before include "One using keyboard" , "Pre-computer office worker" , "Forerunner of the word processor operator" , "Skilled keyboarder" , "One uses an old-fashioned keyboard" .)