> from the Latin for a list of items recorded, ultimately from a word for carrying. Maybe there's something to make of that in connection to each of these very

> from the Latin for a list of items recorded, ultimately from a word for carrying. Maybe there's something to make of that in connection to each of these very different meanings, I don't know. CPU registers carry values, musical registers carry tunes. (Or something very roughly along those lines, anyway; etymology is messy and complicated.)