When Margaret Burnett was growing up in the 1960s, being a female with a gift for math led to one likely career: teaching. She didn’t see herself in front of a classroom, but when a neighbor got a job with IBM after majoring in math in college, Burnett saw an opportunity. As an undergraduate at Miami University in Ohio, she would rush home to do her computer programming homework. “It was like a new puzzle. I loved it,” she says.