Came here to see a reference to Karnaugh maps :-) https://en.wikipedia.org/wiki/Karnaugh_map https://en.wikipedia.org/wiki/Karnaugh_map Returning on topic, li

Came here to see a reference to Karnaugh maps :-) https://en.wikipedia.org/wiki/Karnaugh_map https://en.wikipedia.org/wiki/Karnaugh_map Returning on topic, like others have stated, some times you need to be an OR, others an AND, others a NOT and some others combinations of all.