It is just like planning dinner. Programming isn't magic and it's wankery to suggest otherwise.
Female programmers where just people who would rewire the computers do to arithmetic that the mathematicians "programmed". They did not write the algorithms nor did they know anything more than the basics of "this plug does this". their job was taking a work sheet and making the machine do what the work sheet instructed them to do. as computers automated this the female "programmers" where no longer needed to do this low skill job https://upload.wikimedia.org/wikipedia/commons/3/3b/Two_wome...
Another example of females doing low skill work that seems technical are phone workers in the 50s https://upload.wikimedia.org/wikipedia/commons/5/50/Telephon...
Due to modern programming jobs being simple maintenance work women are being pushed into the job to get them to lower the wages of male workers.
If you are a male who is a programmer or female with a husband who is a programmer you are cheering for lower wages
https://en.wikipedia.org/wiki/ENIAC#Programming
ENIAC started with an exclusively female group of six programmers.
This Cosmo article is from 1967: http://boingboing.net/2015/07/31/the-computer-girls-1967-c.h...
In a line sure to make heads explode, it quotes Grace Hopper explaining how programming is just like planning dinner.