Reply to post: Re: Sinclair pocket calculator

Happy birthday, Sinclair Radionics: We'll remember you for your revolutionary calculators and crap watches

Stumpy

Re: Sinclair pocket calculator

It's because the early calculators didn't actually have a square root function properly programmed either in their software or in the hardware. Instead they used Taylor Polynomials to approximate the answers so would always be slightly off when it came to rounding to a fixed number of decimals.

Taylor expansion for sqrt(x)

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