https://en.wikipedia.org/wiki/Altair_8800
> It was the first commercially successful personal computer.
https://en.wikipedia.org/wiki/Ed_Roberts_(computer_engineer)
> He is most often known as "the father of the personal computer."
(This looks like a good article/story that is not found on Wikipedia; just sharing these links for anyone who wants an overview / know what it is about, before diving into the story.)