Charactron

Okay kiddo, so a charactron is a very special kind of display that was used a long time ago, before modern computers and TVs. It was like a big screen made up of tiny dots that could light up.

But here's the cool part - the dots weren't just random. They were arranged into shapes that looked like letters, numbers, and other symbols. And the charactron could light up those shapes to show words and pictures!

So imagine a giant coloring book where each page has a letter or symbol on it, and you can use a special pen to color it in and make it light up. That's kind of like how a charactron works.

People used charactrons in things like old computers, calculators, and even some TVs. But nowadays we have better technology that can create images and words on a screen without using charactrons. So we don't see them very often anymore.