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

Have you ever clicked something… and your computer or tablet stopped moving? 😠

 

  • The mouse doesn’t move

  • The app won’t close

  • The screen is stuck

  • You can’t even press “Restart”

That’s called a crash.

Your computer didn’t explode. It just got really confused and didn’t know what to do next.
So it stopped. Like a person staring at a super hard math problem and saying:

“I’m done. I can’t go on.”

 

🧠 Why Does a Computer Crash?

Let’s remember what a computer really does:

  • It follows tiny, tiny instructions

  • One by one

  • Over and over

  • As fast as lightning

But if one instruction is broken or missing or makes no sense

…the computer gets stuck.

Imagine this:

A recipe says:

“Step 3: Stir the soup.”
“Step 4: Jump into the bowl and fly to Mars.”

You’d say:

“Wait, WHAT?!”

That’s what the computer says too.

 

🔍 Real Reasons Computers Crash

Here are a few big ones:

Reason What Happens
Bad code (a bug) App says to do something impossible
Too many apps open Computer runs out of memory
Hardware trouble Something like RAM or the hard drive breaks
Overheating Computer gets too hot and turns off or slows down
Corrupt files The system tries to read something damaged
Software fights Two apps argue over the same memory and crash

Sometimes it’s just one mistake in millions of steps.

 

🛠️ What Does “Restart” Really Do?

When you restart, you’re basically saying:

“Let’s start fresh — forget what just happened.”

It’s like clearing the blackboard and writing the steps again from the top.

The computer forgets all the confused stuff, starts from instruction #1, and runs normally again.

 

💡 How Do People Try to Fix Crashes?

  • They check for updates (maybe a new version fixed the bug)

  • They uninstall and reinstall the app

  • They restart the device

  • They close other apps to free memory

  • They scan for hardware issues or broken parts

Sometimes even pros need to dig really deep to find the problem.