Wienand I. Computer Science from the Bottom Up 2022

Textbook in PDF format

Computer Science from the Bottom Up — A free, online book designed to teach computer science from the bottom end up. Topics covered include binary and binary logic, operating systems internals, toolchain fundamentals and system library fundamentals.
Introduction
Welcome
Philosophy
Why from the bottom up?
Enabling Technologies
General Unix and Advanced C
Binary and Number Representation
Types and Number Representation
Computer Architecture
The Operating System
The Process
Virtual Memory
The Toolchain
Behind the process
Dynamic Linking
Glossary