Women have been part of the field of computer science since the very beginning. Ada Lovelace has a language named after her and arguably was the first programmer. She programmed the at that point theoretical machine created by Charles Babbage. The pattern of female programmers continues when computers really became practical. During WW II, Bletchley park was famously staffed by female computers. And the Eniac had several female mathematicians working on it. A female mathematician named Margaret Hamilton became a programmer at Nasa and ended up heading the team that built the on board flight software for the Appollo program. She also later coined the term software engineering.

It's true that not a lot of woman pursue careers in math, science, etc. That's true today even when there are fewer obstacles than ever for them to do so and a lot of companies, universities, etc. are under pressure to have diversity in their staff and leadership.