Cryptologic History Calendar

1947: Grace Hopper & the First Computer "Bug"

Friday, September 9, 2016

1947: Grace Hopper & the First Computer "Bug"

Description: Always ready to pioneer new methods of problem-solving, Captain Grace M. Hopper made history on September 9, 1947, by removing the first computer bug. It was a moth that got into the relay calculator and was the first actual case of a bug being found.

Afterward, the operators coined the phrase that they have “debugged the computer.” Of course anyone with a computer science background probably knows that story.

Shared by U.S. Navy Cryptology and Technology