On
September 9, 1945, a moth was "found trapped between points at
Relay # 70, Panel F, of the Mark II Aiken Relay Calculator while it was
being tested at Harvard University". The operators taped the moth
to the computer log, with an entry of "First actual case of bug
being found". They announced that they had debugged the machine.
This is the origin of the term "debugging".
Unless otherwise noted, all photos and text is Copyright © Richard G Lowe, Jr.