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Peripherals are pieces of hardware that you add to your computer. In the Computer Peripherals Channel, find explanations, reviews, videos and prices on these parts, plus how they communicate with your computer.

Computer security is an increasingly important consideration. From authentication to encryption keys, learn how to keep your computer's hard drive protected and your personal information safe.

Software refers to the programs your computer uses to perform the actions you want it to. Learn all about computer software, from Web browsers to the latest operating systems, with our explanations, reviews, videos and prices.

We look to the Internet for news, socializing, shopping, research and more. From HTML code to instant messaging, we'll break down what's really going on whenever you log on, send an e-mail, visit a popular Web site or post to a blog.