What is the primary purpose of modulation in communication systems?
Correct Answer: Modulation allows signals to be transmitted over long distances.
- Step 1: Understand that communication systems need to send information from one place to another.
- Step 2: Realize that information can be in the form of sound, video, or data.
- Step 3: Know that signals can be weak and may not travel far without help.
- Step 4: Learn that modulation is a technique used to improve the transmission of these signals.
- Step 5: Understand that modulation changes the frequency of the signal to a higher range.
- Step 6: Recognize that higher frequency signals can travel longer distances and through different materials (like air or cables).
- Step 7: Conclude that the primary purpose of modulation is to make signals suitable for long-distance transmission.
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