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Inside a Cell Phone
On a “complexity per cubic inch” scale, cell phones are some of the most intricate devices people play with on a daily basis. Modern digital cell phones can process millions of calculations per second in order to compress and decompress the voice stream.
The parts of a cell phone

If you take a cell phone apart, you find that it contains just a few individual parts:

• An amazing circuit board containing the brains of the phone
• An antenna
• A liquid crystal display (LCD)
• A keyboard (not unlike the one you find in a TV remote control)
• A microphone
• A speaker
• A battery

In the next section, we’ll look closer at the circuit board and its components.

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