PCs are everywhere. Many of us use a PC every single day but may have no idea how they work or how far we've come in the past 20 years. Sean Carruthers explains what exactly a PC is and drops some details on how they work with a little history thrown in for good measure.

Bluetooth is the going standard for connecting your mobile phone with wireless headsets, the speaker system in some cars, even GPS units, computers and other mobile devices. We'll learn how the name Bluetooth came to be and explore what exactly it is that makes Bluetooth so popular and widely accepted.

Sean Carruthers gets up close and in depth with the hard drive. He takes a look inside and explains how spinning platters and magnetism let you save your files for access later.

In part one of The Noob's two-part series on The Switch to Digital Television we introduced the idea behind digital TV and what it all means. Now, Andy Walker talks about practical ways you can make sure you're prepared for when the analog switch is flipped off forever in the U.S. in February 2009. Are you ready? You will be after watching the second in our two-part series.

TV is going digital, but what does that actually mean to you? In part one of The Noob's two part series on digital TV, we'll explore the switch and find out if you're ready for it. Next episode, we'll revisit the DTV discussion and find out what it will take and how much it might cost to get up to speed.

A brief history of the now iconic mouse. Learn how optical (red light) and ball mice work and how a small wooden box changed the computing world.