2026-09-18 09:53 UTC
Anyone know if there was ever a passive solar powered calculator that included hexidecimal inputs (A through F?) I'd really like one for converting between hex and decimal. Ideally in a 'credit card' size, but larger would be fine too.
Also while searching for such a device I've discovered to my horror that you can buy modern battery powered calculators have a fake solar strip that's just a sticker and provides no power to the device
Replies (2)
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@Headfirstonly@pixelfed.social 2026-09-18 09:58
You can still pick up Casio FX-451s on eBay. Sadly mine died years ago...
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@raptor85@mastodon.gamedev.place 2026-09-18 10:18
@voxel@merveilles.town pretty much any TI or Casio scientific calc has hex inputs (they're alts on the number keys), they work off solar if the light is bright enough and switch to either a button battery or AAA if it's not. You can take the battery out on most of them and they will still work if the light is bright enough though, just not recommended because that was a MAJOR downside of fully passive ones, they'd be super dim and if you didn't have the window open or a lamp over it they'd often just die.