Question

1. Electromagnetic waves can carry more data at higher frequencies. Why would a scientist opt to transmit data at a lower frequency instead?
2. What are the limitations of sending information using electromagnetic waves?
3. What are the differences between analog and digital signals?
4. What are the advantages of using digital signals over analog signals?
5. Using reliable internet sources, identify three ways we use analog and digital signals in our everyday lives.

Answer 1

Viewed from afar, the wave function below may seem smooth and analog, but when you look closely there are tiny discrete steps as the signal tries to approximate values: That's the big difference between analog and digital waves. Analog waves are smooth and continuous, digital waves are stepping, square, and discrete.