Karine Simard, an author on a Project Management Blog, called PMstudent.com,created an excel sheet to highlight the input and output parameters on each process within each of the 9 Process Groups and has released it on the internet.

One Commenter mentioned that it would be usefull to add the Tools and Techniques and that it would help to flowchart the inputs and outputs using MindMap or Visio.

How ever, when I passed my PMP exam around 3 years ago the table based approach helped a lot to understand the principal and to get it into my head.

via PMstudent.com