5 Questions
What type of signals replaced most of the analog signals on televisions?
Digital signals
How is the sound of your voice transmitted from one telephone to another?
Sound Waves --> Digital Signals --> Radio Waves --> Sound Waves
What kind of waves are sent from cell phones to cell phone towers?
Radio waves
How did astronauts in outer space communicate with people on Earth?
Radio waves
What did scientists use to make radio wave analog signals powerful enough to transfer information from Earth to outer space?
Digital signal processing
Explore the relationship between waves and transferring information, and how they apply to information transfer devices. This lesson covers the concept of information transfer through waves and signals.
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