Below is a link to a Powerpoint I had put together in regards to the CPU of a computer. The information within the presentation is straight from the CPU chapter of the A+ Certification Study book by Mike Myers 8th Edition. Information within the presentation is for both the 801, and 802 portion of the A+ Certification test.

https://docs.google.com/file/d/0B7XIosphM-quSXFCSkZQYVFfQVE/edit?usp=sharing