Congratulations to Robert Oesterreich and Fred Grant, winners of the second round of the Empire of the Sum giveaway! Their names were picked at random from the set of all entrants who replied to the original post about the competition.
It’s out! Empire of the Sum is now available in the US, and to mark the occasion I’ve been posting about a few of my favourite calculators. I’m closing this series for now with perhaps the apotheosis of 1980s calculator design: the 1981 Casio QL-10 Calculighter.
Congratulations to Mary Ann Atwood and John W. Stuart, winners of the first round of the Empire of the Sum giveaway! Their names were picked at random from the set of all entrants who replied the original post about the competition. Thank you all for entering! If you won, congratulations, and look out for an email from me arranging delivery of your copy of Empire. If not, read on.
I had a lot of fun a few months back recording an interview with Dallas Campbell on the subject of book history for his podcast, Patented. At least someone else must have enjoyed it too, because Dallas invited me back for another episode, this time on digital calculators. Have a listen and let me know what you think!
It’s out! Empire of the Sum is now available in the US, and to mark the occasion I’m posting about a few of my favourite calculators. Today’s is the Hewlett-Packard HP-35, a scientific calculator that today looks quite unremarkable — and yet which, at the time, was revelatory.