Computing is one of the sciences that was mostly developed after women were given civil rights in the US, so women were far better-represented in early computing R&D than in many other fields. There were companies led by women, and there are still seminal research papers that I've seen cited that were written by women.

Planet Money did an interesting rundown on what this looked like, but they focus a bit more on why the balance drastically shifted in 1984.

http://www.npr.org/sections/money/2014/10/17/356944145/episo...