Let me hyper focus on this. Women in coding / software / computer engineering used to be the norm where women were a major part of the CS work force and many of the "greats" were women. It is only in the 1980s and later that this dramatically reversed and men greatly outnumber women. The inflection point of when this happen depends on how you count the numbers (like by college degree, like by occupational statistics, and so on.)

Nice Graph here, as you can see it was 1983 if you use college degree to determine the inflection point.

https://www.npr.org/sections/money/2014/10/21/357629765/when-women-stopped-coding

https://hackernoon.com/a-brief-history-of-women-in-computing-e7253ac24306