The term computer architecture refers primarily to how software, hardware, and network technologies come together to create computers and systems. As the word architecture implies, it’s about how these different technologies are built on top of and support one another. To put it simply in relation to that, computer architecture is about building computers and knowing which components work better together.
What is Pligg?

Pligg is an open source content management system that lets you easily create your own user-powered website.