Sem 3 - Internal representations

Addition and subtraction in complementary code

$[x+y{]}_{compl}=[x{]}_{compl}\oplus [y{]}_{compl}$ $[x-y{]}_{compl}=[x{]}_{compl}\oplus [-y{]}_{compl}$

$[47-102{]}_{compl}-[47{]}_{compl}\oplus [-102{]}_{compl}$