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Here’s the deal...
Here’s the deal...
You can't be digitally literate if you don't understand what a computer is!
You've been using these tools your entire life. It's time you understood how they work.
What makes a Computer a Computer?
What makes a Computer a Computer?
Before moving into specifics, it helps to see the big picture of what a computer actually does—because everything else in digital literacy builds on that foundation.
Hardware vs. Software
Hardware vs. Software
To understand how computers work day-to-day, we need to separate the two major sides of any system:
the physical components and
the programs that run on them.
Hardware is the part of the computer you can kick. Software makes you want to kick it.
Jokes aside, that difference matters because every digital task you do, from saving a file to streaming a video to running an app, involves both sides working together.
Hardware is the physical part of a computer system. Computers require hardware to exist.
In contrast, software is the programs and applications you run on the physical device, like the OS (Windows) or a program like Microsoft Word.
Hardware: Inside Your Computer
Hardware: Inside Your Computer
Part of being digitally literate is understanding the basic hardware components of a computer. After all, how can you buy a computer if you don’t know what the components do or why they matter?
We only need a handful of components to build the most basic computer:
1. Motherboard
The main circuit board that connects everything and lets the parts communicate.
2. CPU (Central Processing Unit)
The “brain” that runs instructions and handles most of the actual processing.
3. RAM (Random Access Memory)
Short-term memory your computer uses to keep active tasks fast and accessible.
4. Storage (Hard Drive or SSD)
Long-term memory where your files, programs, and operating system are saved.
5. Power Supply
Converts electricity from the wall into usable power for the computer.
What is Software Exactly?
What is Software Exactly?
You may have heard that your computer understands 1s and 0s, or binary. This is typically the number system used to encode machine language.
Machine language is the set of low-level instructions that a computer can run directly.
Since binary is impossible for humans to use, programmers write code in high-level languages (Java, C++, Python, etc). The high-level language is then converted into the 1s and 0s that the machine actually executes.
Every app you use, either on a phone, tablet, laptop, or desktop, is software, and it relies on the operating system to run (more software!).
We’ll dig deeper into software in Unit 2.
Notebook ACTIVITY
Notebook ACTIVITY
You use your computer every day, but do you actually know what's inside it?
Look up your device's specs and record the following in your notebook:
Your CPU (processor) and its speed
How much RAM do you have
Your storage drive size and how much space is currently available
Need help finding your specs? Windows | Mac | Chromebook
Why does any of this Matter?
Why does any of this Matter?
You use computers all day, every day — your phone, your laptop, your gaming console, your car, your microwave. Most people have no idea what's actually happening inside them. That gap will cost you eventually, whether it's buying the wrong device, not knowing why something is slow, or getting taken advantage of by someone who does know.
Understanding hardware and software isn't just for IT people. It's for anyone who doesn't want to be helpless when technology fails them — which is everyone.
Understanding > Just Using
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