Editing Operating Systems (section)

== <span style="color: #FFFFFF;">Remembering</span> ==
* '''Operating System (OS)''' — Software that manages computer hardware and software resources.
* '''Kernel''' — The core part of the OS that has complete control over everything in the system.
* '''Process''' — A program in execution; the basic unit of work in an OS.
* '''Thread''' — A subset of a process; multiple threads can run within a single process.
* '''Virtual Memory''' — A technique that uses the hard drive to simulate additional RAM.
* '''File System''' — The way the OS organizes and tracks files on a storage device (e.g., NTFS, APFS, ext4).
* '''Interrupt''' — A signal to the processor emitted by hardware or software indicating an event that needs immediate attention.
* '''Context Switch''' — The process of storing and restoring the state of a CPU so that execution can be resumed from the same point at a later time.
* '''Scheduler''' — The part of the OS that decides which process runs next and for how long.
* '''Device Driver''' — A program that allows the OS to communicate with a specific piece of hardware (e.g., a printer).
* '''Shell''' — The user interface that allows access to the OS's services (can be GUI or CLI).
* '''System Call''' — The interface between a running program and the operating system.
* '''Deadlock''' — A situation where two or more processes are blocked forever, each waiting for the other.
* '''GUI (Graphical User Interface)''' — A visual way of interacting with a computer using windows, icons, and menus.
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