Fantastic notes (in the PDF linked to). These, coupled with the Usborne 80s computing books recently released[0], really take you back to a different time.<p>--<p>[0] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11051095" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11051095</a>