Knuth's volume that goes over different number systems was a ton of fun. Goes over some of the interesting ideas behind such things as two's compliment numbers

Knuth's volume that goes over different number systems was a ton of fun. Goes over some of the interesting ideas behind such things as two's compliment numbers, as well. That is, even within the same base, you can have different ways of doing things. "Balanced ternary" is the one that seems like it had the most potential outside of binary, in a computer. That ship has firmly sailed, at this point.