⌨️ Let’s Press “A” On the Keyboard

You tap the A key.

What happens next?

Here’s the journey:

  1. The keyboard sees which key you pressed

  2. It turns that into a number (like 65 for A)

  3. It sends the number as bits to the computer

  4. The computer stores or shows the letter on the screen

Fast, right?

It takes less than a blink.

 

🧠 The Keyboard Sends Codes

Your keyboard is like a mini computer.

Each key has a tiny chip underneath. When you press it:

  • It sends a signal

  • That signal is a scan code

  • The main computer listens for that code

  • It turns it into a letter, number, or command

 

💬 What Happens If You Hold the Key?

It keeps sending the signal!
So your screen might show:

AAAAAAAAAAAAA

Each A is a new group of bits.

Even holding down a key creates more and more bytes.

 

🔍 Why This Matters

You might just be typing…

But inside the computer:

  • Bits are flying

  • Bytes are stored

  • Programs respond

  • Files get written

  • And memory lights up

All from your finger tapping a key.

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