What is the role of the Process Control Block (PCB) in Windows?

[ProfRon]

I remember when I first wrapped my head around this.
The PCB acts like a snapshot of your running program in Windows.
It holds all the bits about where that program paused.
You know, like its memory spots and what it was doing last.
Without it, Windows would fumble switching tasks.
I mean, imagine juggling apps without notes on each one.
It tracks the program's mood, basically its ready or waiting state.
You switch tabs in your browser, right?
PCB makes that flip seamless behind the scenes.
It stores priority levels too, so Windows picks what runs next.
I chat with friends about this over coffee sometimes.
They nod when I say it's the program's ID card.
You open too many things, and PCB helps sort the chaos.
It even notes open files or devices the program uses.
Windows peeks at it to resume without glitches.
I fixed a buddy's PC once, and this stuff saved the day.
You get why it's crucial for smooth multitasking.

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I swear by it for keeping processes and guests intact.