Re:macOS menu bar app that shows how full the ISS urine tank...
by vasco on Wednesday December 25, 2024 @05:11AM
(#42508004)
> Hex is only better than decimal if hex allows the number of digits to be reduced. If we need to only encode 26 elements, then hex doesn't reduce the number of digits compared to decimal, so hex has no advantage over decimal in the 26-element case
He had more than 26 things to encode, I believe he started with numbers, letters and a question mark.
> Using just 0 or 1 will increase the number of digits needed, so has a clear disadvantage compared to hex or decimal
Using 0 or 1 decreases that to only 3 cards (including question mark), and increasing the safety margin to 120° on the setup he had. It'd take longer but be more robust.
Re:macOS menu bar app that shows how full the ISS urine tank...
by Thorrez on Thursday December 26, 2024 @12:44AM
(#42513371)
>He had more than 26 things to encode
Ok, then hoten's comment had an error which propagated to my comments:
>26 division of a circle was too much for reliable determination of which sign the camera was pointing at
The points of my previous comment:
* Ascii is only needed if we need to encode things other than just letters (or if case matters).
* Hex is only better than decimal if hex allows the number of digits to be reduced. If we need to only encode 26 elements, then hex doesn't reduce the number of digits compared to decimal, so hex has no advantage over decimal in the 26-element case.
Using just 0 or 1 will increase the number of digits needed, so has a clear disadvantage compared to hex or decimal.