b.2.1 operating systems
Meet the boss of your computer. Learn how the Operating System manages memory, multitasking, and security while giving you the interface you use every day.
Think of your computer as a busy restaurant. The hardware is the kitchen and the applications are the customers, but who is running the show? That’s the Operating System (OS). It’s the "event manager" that makes sure everything runs smoothly without chaos. Whether it's Windows, macOS, or Android, the OS decides which app gets to use the CPU (process management), makes sure you don't run out of RAM (memory management), and handles your security. It also gives you the User Interface—whether that's clicking icons on a screen (GUI) or typing cool hacker commands (CLI).
This page is mainly about operating systems
The study of Operating Systems is fundamental to understanding how abstract software interacts with physical hardware to create a usable machine. This progression maps the pedagogical journey from a basic awareness of the OS as the 'boss' of the computer in earlier key stages, through to a deep, technical understanding of memory management, concurrency, and virtualisation at KS5. The mapping ensures students do not just theorise about these systems, but actively interact with them through configuration, command line interfaces, and diagnostic utilities, bridging the gap between abstract theory and practical network administration skills.
Last modified: March 20th, 2026
