Jean Jennings Bartik

Jean Jennings Bartik, an American computer pioneer, was born Dec. 27, 1924. Having majored in math at Northwest Missouri State Teachers College in Maryville, Jennings was invited by the Moore School of Electrical Engineering at the University of Pennsylvania to join…

Grace Hopper

Grace Murray Hopper, an American Naval officer and computer scientist, was born Dec. 9, 1906. Hopper received her PhD in mathematics from Yale and was teaching at Vassar when she decided, in 1943, to enlist in the Naval Reserve to help the war effort. The Navy sent…

Ada Lovelace

Augusta Ada Byron King, the Countess of Lovelace, was born Dec. 10, 1815 (see first image above). Usually known as Ada Lovelace, she was the daughter of the poet Lord Byron and the mathematician Annabella Milbanke; she inherited Byron’s looks and joie de vivre…