(logic circuits) A Boolean operation that is accurate once the two input variables are different but is normally Phony; the XOR operation ( A B ¯ + A ¯ B displaystyle scriptstyle A overline B + overline A B (= quarrel) ? Differenz file, ? Auseinandersetzung f; a difference of belief ? eine Meinungsverschiedenheit; to settle or solve one’s diffe