Conversation so far:
Where did Grace Hopper work?
She worked for the US Navy and the Eckert–Mauchly Computer Corporation.
What was Grace Hopper's title in the NAVY?
Navy rear admiral and senior mathematician at Eckert-Mauchly.
Who was in charge of Hopper in the Navy?
In the navy she served on the Mark I computer programming staff headed by Howard H. Aiken.
What was UNIVAC
The UNIVAC I (UNIVersal Automatic Computer I) was the first general purpose electronic digital computer design for business application produced in the United States.

Question: What year was this
Self-contained rewrite: What year did Grace Hopper work on Univac?