This website is going to give examples and links to the different topics involved with basic computer learning. This is for those students who are studing computer science or any topic related to computer science.
These section will show you a bit about logical equivalence:
1.https://www.youtube.com/watch?v=AHQlstJq8X4&feature=plcp
2.http://en.wikipedia.org/wiki/Logical_equivalence