This key facts covers Functions of an Operating System within Operating Systems for GCSE Computer Science. Revise Operating Systems in 3.4 Computer Systems for GCSE Computer Science with 15 exam-style questions and 10 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 3 of 9 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Functions of an Operating System
| Function | Description | Example |
|---|---|---|
| Memory Management | Allocates RAM to programs; manages virtual memory | Swapping inactive apps to disk when RAM is full |
| Processor Management | Schedules CPU time between processes (multitasking) | Switching between Chrome, Word, Spotify quickly |
| File Management | Organises files in folders; controls read/write access | File Explorer, permissions, file extensions |
| Device Management | Communicates with hardware via device drivers | Installing printer driver to print documents |
| User Interface | Provides way to interact (GUI, CLI) | Windows desktop, terminal/command prompt |
| Security | User accounts, passwords, access control | Login screens, admin permissions |
Practice questions for Operating Systems
Which of the following best describes the role of an operating system?
Explain how an operating system manages memory.
Quick recall flashcards
What does GUI stand for?
Graphical User Interface
What does CLI stand for?
Command Line Interface