Conversation so far:
What was an anecdote about Grace Hopper?
Grace Hopper is famous for her nanoseconds visual aid.
What did Grace Hopper use for her nanoseconds visual aid?
Grace Hopper started handing out pieces of wire that were just under one foot long. She gave these pieces of wire the metonym nanoseconds.
Did Grace Hopper use any other visual aids, besides the nanoseconds?
Grace Hopper handed out nanoseconds to everyone in the audience, contrasting them with a coil of wire 984 feet long, representing a microsecond.
What was Grace Hopper trying to show with her visual aids?
Grace Hopper used the same pieces of wire to illustrate why computers had to be small to be fast.
What was another anecdote about Grace Hopper?
While neither Grace Hopper nor her crew mentioned the phrase debugging in their logs, the case was held as an instance of literal debugging.

Question: When did she literally debug something?
Self-contained rewrite: When did Grace Hopper literally debug something?