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Comment by bpodgursky | Hacker News Reader

I do have an old TI-83+ from high school around somewhere... I wonder if the chip shortage made it a good investment.

Selling something based on a z80 for $100+ in the 21st century is truly an impressive feat.

Scientific calculator were there before NFTs

I do wonder why there isn't an open source graphing calculator.

Unless there is?

Granted, the unchanging nature of a TI calc is part of the appeal.

https://www.numworks.com/ is/was open source friendly

Problem is, how do you get the non-TI calculator approved for taking tests?

Now that you mention it, I might try to pawn my old calculator. It’s not doing me any good and some other kid can certainly use a discount used one.

Buy up all the used ones in town, then 'rent' them through the school for a big mark up.

Learn from Thales!

How many Bitcoin can my TI-83+ mine?

About .8 hashes per second, seeing as it uses the same CPU as the original Game Boy:

It doesn't though, the Gameboy is more like the Altair or Compucolor which had 8080 CPUs.