It's been a rather known issue for quite a while that people with a significant interest in technology also tend to seem more Aspie than not, and there may well be an underlying reason for that, as the rates of autism spectrum disorders in Silicon Valley suggest.

It really wouldn't be surprising for those heavily interested in a field characterized by repetitive behavior and rewarding focused interest would be the same.

a highly intense and specialized area of interest, like dinosaurs

While that might occur, it's not, in my opinion, a very good example. Many normal male children focus on dinosaurs at some point or the other -- Calvin of Calvin and Hobbes was a rather good example of that particular time period.

The DSM-IV-TR definition of Asperger Sydrome requires that the repetitive or stereotyped behavior be so pervasive as to get in the way of normal social or professional development. A kid with Asperger's does not just show interest in dinosaurs; he or she might spend months or years reading about and greping each category of dinosaurs, preferring to do so rather than even play video games or outside, while not showing any interest in modern reptiles. A few examples I've seen included an individual that could list and name visual differences between every firearm Colt made in a length of twenty-plus years and a young man that could recite a pretty accurate description of quantum mechanics as related to the double-slit experiment and some related destructive interference experiments. Another was an 18-year-old that I first thought normal until he provided a fairly long and in-depth recitation of differences between one camera type and the next.