Shared memory (interprocess communication)

Imagine you have a big magic box that can hold a lot of books and toys. But there are two kids who want to play with the same toys and read the same books at the same time. Now, you can't make copies of the toys and books because it would take up a lot of space and cost too much. So what do you do?

Shared memory is like giving both kids access to the same magic box. They can both reach in and play with the toys and read the books, without having to separately make copies or have their own individual boxes.

In the same way, when computer programs need to share data or information, they can use shared memory. This means that multiple programs can read and write to the same chunk of memory, without having to make copies or have their own separate chunks of memory.

Shared memory is like a big magic space where different programs can access the same information without having to make their own copies, saving time and resources.