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is anyone aware of a physical calculator (an actual one, with buttons) designed for working with integers, hex, and binary, with support for both arithmetic and binary operations?

I'm looking for something with the simplicity of a basic calculator, with minimal cognitive effort to operate it, rather than something where I have to constantly press a bunch of buttons to switch modes or do anything useful.

I could build one, I guess, if it doesn't exist (or if it costs silly money).