In the mid-nineteenth century, long before computers existed, Ada Lovelace invented computer programming. She was the daughter of Lord Byron, whose wife insisted that young Ada receive a strong education in math and science; she was also a mother of three, although records remain frustratingly unclear on the quality of her beef stroganoff. Lovelace wasn't credited publicly for her work until almost a century later, and she's still often written out of the history of computer science. This is the fifth Ada Lovelace Day, and there's going to be a Wikipedia edit-a-thon this afternoon to raise the profile of notable women in STEM, so feel free to dig up some old photos of your best gravity bong and add yourself to the pantheon.
More on this topic at Mother Jones: "Eight Inventions by Women That Dudes Got Credit For."