When I first taught computer organization to computer science majors here at East Tennessee State University, I was not sure where to begin. My training as an electrical engineer provided me with a background in DC and AC electrical theory, electronics, and circuit design. Was this where I needed to start? Do computer science majors really need to understand computers at the transistor level?The textbook used by my predecessors assumed the reader had had some experience with electronics. The author went so far as to use screen captures from oscilloscopes and other test equipment to describe circuit properties. I soon found that this was a bad assumption to make when it came to students of computer science.