Here you can find some notes from the course Computer Architecture and Operating Systems by Higher School of Economics.
You should consider the repo as a huge cheatsheet, not your main study book.
Please be welcome to look at the main information about this university course:
- Wiki-page [RU]: http://wiki.cs.hse.ru/CAOS-2021
- Original video-lectures [RU]: https://www.youtube.com/playlist?list=PLEwK9wdS5g0r5XFoE8dCzMng5CYrq-CKE