Crossword Genius

Pioneering 1940s computer (5)

Ross

I believe the answer is:

eniac

'pioneering 1940s computer' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for eniac that I've seen before include "old computer" , "Old calculator" .)

I've seen this clue in The New York Times.
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