Modulation

Modulation is like changing a signal from one form to another. To make this easier to understand, let's use an example.

Let's say you want to send a message to your friend over the phone. To do this, your voice needs to be changed into an electronic signal so that it can travel to your friend. This is where modulation comes in. Modulation changes the voice signal into electronic signals so that it can be sent over the phone. Then, your friend's phone will change the signal back to your friend's voice so they can hear what you said.

In this example, your voice is the signal, and the phone is the modulator. Modulation makes it possible for us to send messages through electronic devices like phones and computers.