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No Wires Required

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Wireless networks are easy to set up and inexpensive. They're also unobtrusive -- unless you're on the lookout for a place to use your laptop, you may not even notice when you're in a hotspot. But as you'll find out in this quiz, there's a lot more to them than meets the eye.

How does Caller ID work?

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How does caller ID work on a telephone? Learn how caller ID systems work.

How Analog and Digital Recording Works

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Learn about analog and digital recording and shop for related products.

Snakes Can Hear You Scream, New Study Says

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A new study dispels the myth that snakes are deaf to airborne sounds and reveals that different species react differently to the sounds they hear.

What Are Those Microchips That People Put in Their Dogs?

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A microchip is no bigger than a grain of rice, and veterinarians can implant the chips into all kinds of pets. Learn how pet microchipping works.

What is ultrasonic mind control?

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Ultrasonic mind control is explained in this article. Learn about ultrasonic mind control.

How Computer Mice Work

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The mouse might just be the computer user's best friend. Every day of your computing life, you reach out for your mouse whenever you want to move your cursor or activate something. Learn how this human-machine interface translates your movements into digital data.

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