Oh, how I loved this book (and the whole series) as a kid -- I probably read it for the first time in 1975 or 1976, when it was still science-fictional, and yet

Oh, how I loved this book (and the whole series) as a kid -- I probably read it for the first time in 1975 or 1976, when it was still science-fictional, and yet the personal computer revolution was just about to get underway.