Help me! Great sites for teacher assistance with computer theory.

Need a definition, some extra information, an explanation on RAM and ROM for those “theory” questions?

Check out these two sites I found that are very useful and a great resource for students to access and use as well:

Computer Hope : Everything computers, from a dictionary of terms to Q&A’s, hardware and software assistance

Webopedia : Online computer dictionary for Computer Terminology, Internet Terms and Definitions