Course Content
Part 2: Talking Without Words
How people used to send messages across long distances The story of light flashes, drum beats, smoke signals, and Morse code Why using dots and dashes (or 0s and 1s) is so powerful. Let’s Talk in Just Two Choices: On or Off - What is binary, and why do computers love it? How “on” and “off” can mean anything—yes/no, true/false, A/B Why 2 choices are enough to build everything
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Part 3: How Electricity Can Carry a Message
What is a circuit? How flipping a switch sends a message Why computers are made of millions of tiny switches.
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Part 4: Building Ideas Using Only Switches
What is a logic gate? (Explained without saying “logic gate”) How switches can help us decide things How “AND,” “OR,” and “NOT” control what a computer does.
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Part 5: How to Count, Add, and Remember With Just Wires
How computers add numbers using only switches What memory really is: remembering a single bit, then a byte How your computer stores your name, photos, and passwords. How switches can do math with just yes/no What memory means for a machine What bits and bytes really are (without the jargon). What are AND, OR, NOT, and more. How pictures, words, and videos are stored as 0s and 1s.
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Part 6: Making Bigger Ideas with Tiny Ones
What is a byte? What is a file? How letters, music, pictures, and videos become 0s and 1s What happens when you type on a keyboard
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Part 7: Meet the Heart of the Computer — the CPU
What the CPU really does (without calling it “central processing unit”) How it reads instructions, decides things, and tells others what to do How fast is it, really?
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Part 8: Let’s Look Inside a Real Computer
What is a motherboard? How all the parts connect: CPU, memory, storage, input/output What happens when you turn a computer on.
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Part 9: What Is Software and Who Tells It What to Do?
What is an operating system? How computers follow code like a recipe What happens when you open an app
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Part 10: How Is a Phone Like a Computer?
What’s different inside a phone or tablet? How mobile computers are smaller—but just as powerful Why phones still need the same ideas: binary, circuits, memory.
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Let’s Find Out How Computers Work

🧠 Why This Lesson Matters

A computer might look like a box or a screen…
…but inside, it’s a city of working parts.

You’ve already met:

  • The Brain (CPU)

  • Memory (RAM and storage)

  • Wires and switches

  • Keyboard and screen

Now let’s see how they all connect.

 

🖥️ The Case Is Just the Shell

If you open up a computer (carefully!), you’ll see:

  • A big green board (that’s the motherboard)

  • A bunch of chips

  • Wires going everywhere

  • Fans spinning

  • Lights blinking

It’s a lot — but each part has a job.

 

🧩 Big Parts You’ll See

  1. Motherboard – the base that holds everything together

  2. CPU chip – the brain

  3. RAM sticks – short-term memory

  4. Hard drive / SSD – long-term memory

  5. Power supply – sends electricity to everything

  6. Cables – connect parts to each other

  7. Cooling fans – keep it from overheating

 

🛠️ Everything Sits on the Motherboard

The motherboard is like a city map — roads and buildings.

It connects:

  • The brain

  • The memory

  • The keyboard

  • The screen

  • The mouse

  • The speakers

So they can all talk to each other.