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Strangely (I think) this doesn't mention the Sinclair calculators, one of which I purchased in the mid-Seventies and still have in a box somewhere. It was minimalist but gorgeous. I'd like to dig it out now and carry it around... would be v hipster.

It's long ago but mine might have been the Sinclair Cambridge Scientific: http://www.vintagecalculators.com/html/cambridge_scienific.h...

What hath god wrought!

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That’s an amazing hack. Cutting a lot of corners, the entire program of the calculator is 320 instructions, on a cpu that doesn’t even have a ‘multiply’ instruction. See http://files.righto.com/calculator/sinclair_scientific_simul...

If you like old calculator hacks, you might be interested to know that some early calculators (such as those from Wang[1]) could natively perform only addition, subtraction, e^x, and the natural log. So to multiply numbers, they took e^(ln(a) + ln(b)). See also: factor combining [2]

[1]: https://en.wikipedia.org/wiki/Wang_Laboratories [2]: https://en.wikipedia.org/wiki/CORDIC#Factor_combining

That's numberwang!!

I had the Radio Shack version, the EC-4001. http://www.vintagecalculators.com/assets/images/RadioShackEC...

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