What is a pixel?

by Miriam Tocino

In the beginning of Zerus gets a Virus, Zerus, Ona and friends are painting cats inside a photo editing application.

Did you see those tiny squares in the background?

It looks like their screen is divided into many little pieces. What are they? 

"They painted and painted and painted, and as they painted they all sang a little song to themselves..."


The screens in our computers, tablets and phones are divided into tiny squares which follow a puzzle. We call these squares pixels. But, computers were not the first ones to use this system to work with color. We Humans have done it for ages!

 Zerus and Ona Pixels Kids Encyclopedia

Zerus and Ona Pixels Kids Encyclopedia 

In the case of pixels, they're so, sooo tiny that they appear to merge into a smooth image when displayed on the screen or printed in paper.

Zerus and Ona Pixels Kids EncyclopediaComputers have their own way of working with color. It's called RGB, which stands for red, green and blue. By mixing them, computers are able to have many of the colors that we humans recognize. Every pixel on the screen has its own amount of red, green and blue.

Zerus and Ona Pixels Kids Encyclopedia

Zerus and Ona Pixels Kids Encyclopedia

Arts & Crafts Time! ✏️✂️

You just learned a new word, Human, which means it's Arts & Crafts time!

Do you want to come up with your own story about pixels? We prepared these printable cut-outs to help you create your own book of Zerus & Ona.

Download them here and print them at home.

And we'd love to see what you make! You can share your creations online with #zerusandona or send them via email to hello@zerusandona.com. We always like it when we get messages from The Human World. 🥰

Lots of megas from The Binary World,

Zerus & Ona


This blog post is part of the Bits & Bytes series, where we highlight some of the words which might have been new to you while reading Zerus gets a Virus.