What If the Instructions Say “If…”?

Sometimes programs say things like:

  • If the button is pressed, do this

  • If the player loses, end the game

  • If the number is bigger than 10, show a warning

How does the computer brain handle that?

It uses logic gates — the same AND, OR, and NOT rules we learned before!

 

🧩 A Real Example

Let’s say a game says:

“If the player has 0 lives, show ‘Game Over.’”

That’s a decision.

So the brain checks the memory:

  • How many lives?

  • Is it 0?

If YES → show “Game Over”
If NO → keep playing

 

🔁 These Are Called “If” or “Compare” Instructions

The brain checks two things:

  • “Is A equal to B?”

  • “Is A bigger than B?”

  • “Is this switch ON?”

Then it chooses:

  • Do Step A

  • Or do Step B

This is how it decides what to do next.

 

💡 But It’s Still Just Following Rules

The brain isn’t thinking. It’s just checking:

“Which rule matches the current information?”

And then it moves on.

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