To understand what it means to be digital, it’s helpful to compare it to analog. Imagine you have a dimmer switch for a light. If you turn the switch slowly, you can make the light very bright or very dim, in a smooth, continuous way. This smooth change is what we call analog. Analog is like a gradual wave; it can have infinite possibilities between the brightest and dimmest light.

Now for digital, instead of having a smooth range, digital uses steps or discrete levels. Going back to the light example, if you have a digital light switch, it might only have a few specific settings: off, low, medium, and high. Each setting is separate and distinct, rather than smoothly transitioning from one to the other. This is what we call discrete because it breaks things down into distinct steps.

A light switch