quartz/content/notes/13-OS-intro.md
2022-09-21 12:09:30 +12:00

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---
title: "13-OS-intro"
aliases:
tags:
- cosc204
- lecture
---
# why learn OS
- security
- optimisation
- wierd bugs
- "crown of programming"
- understand hardware better
- embedded sys and IoT
- co-design of hardware and software
# what is an OS
![big picture diagram|400](https://i.imgur.com/9O1YR0p.png)
- a program (also called OS kernel) loaded onto RAM first when pc is turned on
- OS kernel (in kernel space)