Most of us grow up using the decimal system (a number system based on ten digits: 0–9) without ever thinking about it. It's the way we learn to count, do math, and work with numbers every day.
Computers take a very different approach.
Instead of ten digits, they use binary, which uses only two digits - 0 and 1. At first glance, that might sound confusing and it's certainly different from what we're used to. However, there's a surprisingly simple reason behind it and without it, our computers couldn't function.
Even though binary uses only two digits, it allows computers to represent numbers, process information, and perform all the tasks we rely on every day. It's one of the fundamental ideas behind modern computing.
Once you understand the basic idea, you'll start seeing technology a little differently.
Watch the full video to see how two digits became the foundation of everything a computer does.
Most people have heard of a computer virus (a harmful program designed to damage, disrupt, or gain unauthorized access to a computer system)—but the way it actually works is often misunderstood.
And computer viruses are only one type of digital threat.
Some threats are designed to spread from one device to another, while others may try to steal information, disrupt normal operations, or gain access to systems without permission. What they all have in common is that they can create problems for users who aren't aware of how they work.
Understanding these basics helps you become more aware of what’s happening behind the scenes every time you use a computer or browse online. The more you know about computer viruses and other digital threats, the better prepared you'll be to recognize potential risks and make safer decisions online.
Watch "What Are Computer Viruses?" now to learn how these threats work and why understanding them is an important part of using technology safely.
When people hear the word programming (the process of writing instructions that tell a computer what to do), they often imagine pages of complicated code, technical jargon, and advanced math.
But what if the foundation of programming is something you've already been doing your entire life?
Think about following a recipe, assembling furniture, or giving someone directions. Each one depends on a series of clear steps performed in the correct order. If the steps are missing, unclear, or out of sequence, the result may not be what you expected.
Computer programs work in a surprisingly similar way. Understanding this concept can change how you think about technology and make programming feel much more approachable.
Watch the full video to see how computer programs really work—and why understanding them is easier than you might think.
