What is "emanator"

Usage examples of "emanator".

I stumbled down the chambers to the thought machines, and sat there for the rest of the night wrestling with the manual screens beside emanators I could no longer use, attempting to find my way into one program amid the myriad.

Bemused smiles involuntarily parting their lips, they would continue on their way for a few yards, when, at a safe distance and no longer able to resist, they would stop and slowly look back, smiling all the while, only to find that the emanator of the aroma had—so they believed—turned a corner or disappeared through a doorway.

At the other end of the cabin, the datacoil wove its tireless spiral from the emanator on the desk to the shelved systems data in the top left-hand corner.