I watched all 4 seasons of Halt and Catch Fire. It’s certainly one of the very best series I’ve seen.
… the series depicts a fictionalized insider’s view of the personal computer revolution of the 1980s and later the growth of the World Wide Web in the early 1990s. …
The cast is all excellent. In season 4 I was won over by newcomer Susanna Skaggs who played a brilliant but socially confused teenager perfectly.
Very believable.

If you hate technology don’t be dissuaded. This series truly isn’t about TECH.
“Computers aren’t the thing,” … “They’re the thing that gets you to the thing.”
I hate football. Yet loved Friday Night Lights. This series is similarly excellent.
I agree with a number of reviewers who felt season 4 was best. And that season 4 tied the story together very well.
Click PLAY or watch it on YouTube.
related – NY Times review – How Failure Made ‘Halt and Catch Fire’ Great