Computer Peripherals

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.


Computers are growing increasingly sophisticated, but in most cases, we interact with them with the same tools we've been using for decades. Can engineers come up with better ways to interface with machines?

Wireless technology has helped get rid of that tangled mass of cables underneath your desk. Wireless printers can help you take the next step toward becoming completely unwired.

Transmissive film can make a LCDs display brighter and easier to read. Or it can keep others from reading your screen. See how it works.

A printer that fits in your pocket? Won't ink drip out of it and stain your clothes? Not with this ink-free portable device. Snap a photo with your digital camera or cell phone and print it instantly.

Inkless printing? It doesn't seem possible. But one company's prototype inkless printer can print as well as erase documents. That means paper can be reused. How green is that?

It's been called a $28,000 keyboard, but actually the Xynergi keyboard is part of a desktop media production center package. Can it revolutionize the media editing industry?

In the not-too-distant future, disabled people could be able to control a motorized wheelchair, the Audeo, with only their thoughts. How could the same technology also restore speech to people who are unable to talk?

Imagine being able to transmit signals that would allow a blind person to see directly into his or her brain. For severely disabled people, the brain-computer interface could be the most important technological breakthrough in decades.

Laser printers are fast, precise and inkless. So how do the words get there? How can a laser beam write on paper? Read about laser printer technology.

PC gaming is one of the fastest-developing gaming sectors out there, and the view is a lot more interesting these days. Gamers can now play incredible 3-D games using high-tech glasses that give the game environment more depth than ever.

Touch-screen monitors have become more and more commonplace as their price has steadily dropped. There are three basic systems that are used to recognize a person's touch -- learn how they work.

With the rise of the MP3 format, burning your own music CDs has never been so popular -- or so easy. CDs have become one of the most widely adopted data-storage mechanisms.

Scanners vary in resolution and sharpness, and their dots per inch (dpi) are determined by two "sampling rates." Find out how they affect your scanner's functionality.

Why do cathode ray tube computer screens contain lead? Learn about these older computer monitors and why you can't dispose of them in the trash.

With the rise of the optical mouse, it appears that the venerable wheeled mouse is in danger of extinction. What makes an optical mouse better, and how does it work?

Inkjet printers shoot miniscule droplets of ink onto paper to create a seemingly fluid stroke. And with prices dropping since their introduction in the late 1980s, these printers are more popular than ever.

Before the digital camera explosion, flatbed scanners were the way to get images into a PC and online. These devices turn images on paper into data you can access on a computer. Find out how scanners analyze, process and transfer images.

The next generation in computer displays gives you a full 180-degree field of view. Learn how the Elumens display works!

Offset printing is the technology that makes most magazines and catalogs possible. See how the offset printing process puts full-color images on paper.

Fluorescent tubes and backlighting help make a computer's LCD screen bright and readable. Find out how these parts work together to keep your screen aglow.

With all the extras and options that are available for new computer keyboards, it's hard to believe that their design originated with mechanical typewriters. Now just look at all they can do!

Stereolithography -- also known as 3D printing -- is an amazing technology that allows you to build 3D plastic prototypes almost as easily as you print something on a sheet of paper!

DVD movies have region codes, and they typically only play on a player or DVD-ROM drive sold in the country where the DVD movie was sold. Find out why and how they're produced this way.

The QWERTY keyboard dates all the way back to the first typewriters. Why are the keys arranged this way, rather than alphabetically?

Remember those faint horizontal lines on cathode ray tube computer screens? What caused them to appear?