User space and kernel space

Okay, kiddo. So, when you use a computer or a phone, you have different types of programs that you can use, like games, websites, and messaging apps. These programs need to talk to something called the operating system, which is like the boss of the computer that helps everything run smoothly.

Now, the operating system is divided into two parts. One part is called the kernel space, and the other is called the user space. Think of it like two different rooms in a house.

The kernel space is kind of like a special room that only certain people can go into. Only very important programs that need to control parts of the computer hardware, like the memory or the input/output devices, can go into the kernel space. This is because these programs need to be very careful and have a lot of power, so we don't want just any program to be able to go in there.

The user space, on the other hand, is like the main living room in the house. This is where most of the programs that you use every day live. That's because these programs don't need as much power or access to the hardware as the ones in the kernel space. Instead, they work with the operating system by asking it to do things for them. For example, a messaging app might ask the operating system to send a message to a friend for you.

So, in summary: the kernel space is a special room for very important programs that need a lot of power, and the user space is where most of the programs that you use every day live. Easy peasy, right?