> How do you tell if a calculator is 8 bit or 16 bit. As someone who has reverse-engineered calculators, that question has me curious. You could implement the

> How do you tell if a calculator is 8 bit or 16 bit. As someone who has reverse-engineered calculators, that question has me curious. You could implement the same external behavior regardless of what processor a calculator uses. So I can't see any way to determine the bit width. Is there an answer I'm missing? (Also the question ignores the many 4-bit calculators.) (Of course you could open up the chip and take a look with a microscope, which I've done. But I don't think that's the answer they are looking for.)