What is the Internet of Things (IoT)?

Learn about the shiny new technology that allows us to be connected like never before.

How do Biometric Scans Work?

Keep your passwords at the tip of your fingers, or maybe at the back of your eyes!

File Systems

‘Files’ may be easy concepts for humans, but not for computers. What’s going on inside your operating system?

Paper Clips Run Amok

A simple thought experiment to shed light on the potential dangers of AI. Can we stop the earth being buried in paperclips?

Requests and Responses

Ever wondered what happens when you connect to a website? Time to dive into the secrets of networking!

Credit Card Algorithm

How can you tell if a credit card number is valid or invalid? Meet the Luhn algorithm, one of many checksums helping us keep the internet in order.

Introduction to Memory Management

Dive into the nuts & bolts of storing pictures and files on your computer.

Dijkstra’s Algorithm

Learn about the brilliant algorithm behind all of your GPS devices.

Image Filters

Learn the secrets behind pixels, image blurs, and all your favourite Instagram filters!

The Uncanny Valley

There might be a reason that too-real robot and video game character creeps you out.


Software programming does neat things with language, in this case, mixing capital letters.

Chain of Command, Command of Language

How do computers predict what text you want to write next? Here's how to create predictive stories.

On Sorting

Have you ever put books in alphabetical order? What do you think the best method of alphabetizing would be?

P v NP: A Modern Mystery

Can we measure the time and steps required for things to happen?

What is Clean Code?

While you can't use soap and water on your code, you can keep your code as sparkly clean as any dish or silverware.


Most people love cookies. But these cookies are the kind that make the internet possible.


State is an important concept in computer science as well as our everyday lives.

Garbage Collection

Computers collect garbage the way humans do. Here's how they manage memory space.

What is Design?

Design is about solving problems, from donuts to race cars, how we eat to what to wear in cold weather.

What are Keywords in Programming Languages?

Everyone knows the difference between saying, “Let’s eat, grandma!” and “Let’s eat grandma!” Computers don't.

What is a Network?

Networks are a mostly hidden but critical part of the internet.

Public Key Cryptography

This cryptography method is based on the fact some tasks are relatively easy to do, but extremely difficult to undo.


Another mysterious four-letter acronym that helps secure information online.

How to Pick a Programming Language

When you pick a programming language to learn first, it helps to figure out what software you want to create.


This odd acronym offers security protection beyond your password. Here are a few examples of how 2FA works.

Software Libraries

Programmers use libraries but instead of books they create and share code, often for free, to help solve common problems.

Fisher-Yates Shuffle

What sounds like a country western dance actually is an efficient way to sort large sets of data randomly.

Computational Thinking

The ability to identify patterns, decompose large problems into small parts, develop algorithms to solve problems, and generalize to find solutions.

Graph Theory

The dots and lines used in graph theory can solve interesting and complicated problems.

The Cloud

If clouds are not digital, what is cloud computing?