(logic circuits) A Boolean operation which is real if the two enter variables are different but is otherwise false; the XOR operation ( A B ¯ + A ¯ B displaystyle scriptstyle A overline B + overline A B And therein I think I can lay my finger on https://thermal-stress-testing-me47912.blogsidea.com/42202727/facts-about-thermal-cycling-profile-requirements-revealed