Operating systems notes
What an Operating System Actually Is
Two views of one program: the friendly face on top, the ruthless referee underneath. Every section is a drawn page beside a clear written explanation, about 16 minutes in all.
- Chapter 1 of 37
- About 16 minutes
- 6 sections
Sign in with Google or GitHub and you land straight on this page. DSA comes with the all labs plan and every ChaiCode batch.

In this chapter
- Two views of the same program
- Abstraction: turning ugly hardware into clean ideas
- Resource management: sharing one machine among many
- The kernel and the privilege line
- The OS as an extended, virtual machine
- Where operating systems live
Next chapters
Read the whole chapter
Sign in and the chapter opens with every drawn page, and all 38 operating systems chapters beside it.
DSA comes with the all labs plan and every ChaiCode batch.