餘碼

excess code (i.e. the unused bits in binary-coded decimal)

extra / surplus / remaining / remainder after division / (following numerical value) or more / in excess of (some number) / residue (math.) / after / I / me

surname Yu

variant of 餘|余[yu2], remainder

weight / number / code / to pile / to stack / classifier for length or distance (yard), happenings etc