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Everyday Tech

How do batteries work? How much energy is your plugged-in gadget using? How do UPC codes work? Find this out and more with Everyday Tech.

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Computer Technology in Pictures

With so many types of computer technology out there, how do you keep up? With these cool image galleries that explain basic parts and technologies of everything computer-related.


How Restaurant Pagers Work

You've probably used a restaurant pager, but have you taken one apart? We have -- see how a restaurant pager works. See more »

How Location Tracking Works

Location tracking can help find people in an emergency, but it can also make your whereabouts known to strangers. Learn about location tracking. See more »

How do the battery testers on battery packages work?

How do the battery testers on battery packages work? See more »

Why do batteries seem to go dead and then come back to life if you let them rest?

Why do batteries seem to go dead and then come back to life if you let them rest? Learn about dead batteries and battery life. See more »

What is the difference between two- and three-pronged plugs?

Some appliances use three prongs to connect to an outlet, while others only use two. Learn the difference between two- and three-pronged plugs. See more »

What does the CE logo I see on lots of products mean?

Many consumer products and electronics are stamped with a "CE" logo. Learn what the CE logo means. See more »

What do the UL marks on so many products mean?

"UL" marks appear on consumer items ranging from Christmas lights to camcorders. Find out what the "UL" logo means. See more »

How Batteries Work

Batteries power the appliances you use daily. Check out battery experiments, the history of batteries, battery reactions and the chemistry behind battery power. See more »

Top Selling Electronics

The top selling electronics are full of fun and useful gadgets. Take a look at what people are buying with this collection of top selling electronics. See more »