I remember Karnaugh diagrams fondly; they were pretty much the first thing covered in my circuit design class which really made sense - and gave me the boost I

I remember Karnaugh diagrams fondly; they were pretty much the first thing covered in my circuit design class which really made sense - and gave me the boost I needed to try to wrap my head around the rest of the curriculum, too. Haven't designed any circuits in my career, but have on occasion used them to simplify my horribly inelegant boolean expressions before committing them to Siemens' S7 SCL.