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How Hearing Impaired Telephones Work

How Telephone Amplifiers Work If you've set the volume on your phone as high as it'll go and voices still sound faint, you may want to consider a device for hearing-impaired telephones called a phone amplifier. Several options are available, including units that attach to a phone line, portable amplifier units and dedicated amplifier telephones, as well as cell phone amplifier systems. Here's how each of th ...

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How Radio Controlled Toys Work

RC Toy Transmitter RC toys typically have a small handheld device that includes some type of controls and the radio transmitter. The transmitter sends a signal over a frequency to the receiver in the toy. The transmitter has a power source, usually a 9-volt battery, that provides the power for the controls and transmission of the signal. The key difference between radio controlled and remote controlled toys ...

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How Cell-phone Viruses Work

Cell-phone Virus Basics A cell-phone virus is basically the same thing as a computer virus -- an unwanted executable file that "infects" a device and then copies itself to other devices. But whereas a computer virus or worm spreads through e-mail attachments and Internet downloads, a cell-phone virus or worm spreads via Internet downloads, MMS (multimedia messaging service) attachments and Bluetooth transfe ...

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How to Clear Phone Line Noise

Finding and Fixing Phone Line Noise If you're still desperately reading this article, then your landline problems probably aren't caused by weather. A simple way to determine the source of the noise is to remove each potential suspect one by one until the noise goes away. For instance, disconnect all the other phones to see if that helps. If it doesn't, see if moving the phone line away from other electroni ...

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How Bone-conducting Headphones Work

How Bone Conduction Works To understand how bone conduction works, you first have to understand how we hear sounds, which we do in two ways: Sound travels in waves through the air. Normally, sound waves travel through several structures in the ear, before being translated and transmitted through our nervous systems to our brains. First, the waves enter the outer ear, or pinna, which is the big flappy piece ...

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How Gizmondo Works

Gizmondo Design At its core, the Gizmondo is built for gaming. It looks a lot like a controller for a console game system, except for the view screen in the middle. The Gizmondo is roughly the same size as a controller, with four gaming buttons on the right, an eight-way game pad on the left, and two additional buttons at the left and right sides of the top of the unit. Five function buttons placed above th ...

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How WiFi Phones Work

Packet Switching and VoIP VoIP uses packet switching rather than circuit switching. Instead of leaving an entire circuit open during the whole conversation, it breaks the conversation into small packets of data. It then transmits that data over the Internet. Instead of monopolizing a circuit, packet switching sends and receives data as needed. Click "Play" to see how packet switching works. Let's say you an ...

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