[defrost]

Historically, in fact, men were leading computing projects and "in charge" of giant room sized computers while the girly details of programming and getting stuff done on a daily basis by the hour went to women.

eg: Steve Shirley

  In the 1950s, she worked at the Post Office Research Station at Dollis Hill, building computers from scratch and writing code in machine language. She took evening classes for six years to obtain an honours degree in mathematics. In 1959, she moved to CDL Ltd, designers of the ICT 1301 computer.

  After her marriage to physicist Derek Shirley in 1959, Shirley founded the software company Freelance Programmers with a capital of £6. Having experienced sexism in her workplace, "being fondled, being pushed against the wall", she wanted to create job opportunities for women with dependents, and predominantly employed women, with only three male programmers in the first 300 staff, until the Sex Discrimination Act 1975 made that practice illegal.

~ https://en.wikipedia.org/wiki/Steve_Shirley

Then computers became cheap enough for families to buy them for their sons (and less often their daughters).