OTOH, Asimov definitely got the importance of miniaturization right in that series, though he mostly applies it to things like force fields and the like, rather

OTOH, Asimov definitely got the importance of miniaturization right in that series, though he mostly applies it to things like force fields and the like, rather than computing devices (other than the tools psychohistorians use). BTW, you may enjoy Donald Kingsbury's Psychohistorical Crisis. Well worth reading, it adds quite a few interesting and plausible embellishments to Asimov's conceptual framework.