014. OCR A Level (H046-H446) SLR4 – 1.2 Paging, segmentation and virtual memory


About this video

OCR Specification Reference
AS Level 1.2.1b
A Level 1.2.1b

In this video we take a closer look at how the operating system managements main memory. We do this by discussing various important concepts such as paging, segmentation and virtual memory.

Key question:

- How does a computer handle running out of memory and why does it slow down?

00:00 Paging, segmentation and virtual memory
00:09 Intro
00:14 Memory management
01:49 Paging
02:39 Segmentation
03:35 Paging vs segmentation
03:48 Memory management and virtual memory
05:42 Key question
05:52 Outro

Last updated: 19.03.26