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Happy Birthday Grace Hopper!

December 9, 2013

Today’s Google Doodle is in celebration of one of computer programming’s pioneers: Grace Hopper.

Grace Murray Hopper (December 9, 1906 – January 1, 1992) was an American computer scientist and United States Navyrear admiral. A pioneer in the field, she was one of the first programmers of the Harvard Mark I computer, and developed the first compiler for a computer programming language. She conceptualized the idea of machine-independent programming languages, which led to the development of COBOL, one of the first modern programming languages. She is credited with popularizing the term “debugging” for fixing computer glitches (inspired by an actual mothremoved from the computer). Owing to the breadth of her accomplishments and her naval rank, she is sometimes referred to as “Amazing Grace”. The U.S. Navy destroyer USS Hopper (DDG-70) is named for her, as was the Cray XE6 “Hopper” supercomputer at NERSC.

And do you see the moth fluttering out of the computer in the animation above?

While she was working on a Mark II Computer at a US Navy research lab in Dahlgren, Virginia in 1947, her associates discovered a moth stuck in a relay and thereby impeding operation, whereupon she remarked that they were “debugging” the system. Though the term bug had been in use for many years in engineering to refer to small glitches and inexplicable problems, Admiral Hopper did bring the term into popularity. The remains of the moth can be found in the group’s log book at the Smithsonian Institution’s National Museum of American History in Washington, D.C.

Click here to see Grace Hopper on Letterman!

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