Great question! I found this after a bit of searching: http://www.cs.princeton.edu/courses/archive/fall09/cos126/lectures/22CPU-2x2.pdf http://www.cs.princeton

Great question! I found this after a bit of searching: http://www.cs.princeton.edu/courses/archive/fall09/cos126/lectures/22CPU-2x2.pdf http://www.cs.princeton.edu/courses/archive/fall09/cos126/le... (see next to last page)