This video explains the fundamental concepts and historical development of operating systems (OS). It covers how OSs evolved from simple program loaders to complex systems managing hardware, memory, and multiple users and programs, highlighting key advancements like device drivers, multitasking, virtual memory, and memory protection.
Imagine a computer's memory as a large bookshelf with many slots. When you want to run a program, it needs space on this bookshelf to store its information.
The memory allocation problem arises because:
The operating system acts like a librarian trying to organize this bookshelf. It has to figure out:
Sometimes, the librarian might give a program a few different small spots on the shelf instead of one big contiguous spot, especially if the shelf is already a bit full. This can make things tricky because the program then has to "know" where all its scattered pieces are, even though it thinks it's getting one continuous space. The operating system's job is to manage all this so the programs can run smoothly without interfering with each other or running out of room.
