Left to right: (1) desktop-size Thales pinwheel calculator, 1910s, four operations, 13 digits with bell on overflow; (2) Curta Type I, pocket size, 1950s, stepped drum, 11 digits; (3) Curta Type II, sligthly larger,15 digits; (4) Alpina, portable, 1960s, pinwheel, 13 digits.
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IT DOES NOT COMPUTE
HN on how to make your own drone
And of course, both Jeff and I thank you for your patronage!
Dumb question: is there a way to *suppress* card previews for links on Mastodon? Sometimes, I want to link to a site without making it look like an image ad in the feed.
On most other social media sites, the preview is rendered as you compose and you can click "x" to remove it. But Mastodon only fetches the preview after you post.
You could order my book directly from the publisher for the past couple of weeks, but I know that some of you don't want Jeff Bezos to starve. If so, I have excellent news: Amazon will start shipping tomorrow.
Order now to impress your friends: https://www.amazon.com/dp/1718504802