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by dspillett 3915 days ago
> but how come graphing calculators haven't advanced at all.

They don't really need to so there is little commercial reason to develop better models. The old TI-81/TI-83 designs are still perfectly sufficient for the courses to a certainly level, and above that you need something much more than just a bit improved so you can run chunky software like matlab. There isn't really much of an exploitable niche in between.