What are analog signals?

An analog signal is like a whisper that changes smoothly from quiet to loud, just like your voice when you talk softly and then shout.

Imagine you're on a swing. When you go up high, the swing moves slowly, and when you come down, it speeds up, it's always changing in a smooth way. That’s what an analog signal is: something that changes gradually, not in big jumps.

Think of a radio. When you turn the volume knob from low to high, it doesn’t just suddenly get loud, it gets louder gradually. That smooth change is like an analog signal.

Now imagine if the radio only had two settings: on and off. Then the sound would jump between quiet and loud, not gradually, that’s more like a digital signal, which we’ll talk about another time.

So, analog signals are all around us, your voice, music from a record player, even the way light changes when you dim a lamp. They’re smooth, continuous, and ever-changing, just like you!