⚙️ Operating Systems

Your operating system is the most sophisticated piece of software most people will never think about. It manages every program running on your computer, controls access to memory, handles files, schedules CPU time, and coordinates hardware all simultaneously.

This course teaches OS concepts with real-world examples from Linux, Windows, and macOS. Every abstract concept process scheduling, virtual memory, deadlocks is connected to something concrete you encounter every day. By the end, you will understand what happens when you run a program, why your computer slows down, how memory works, and what a file system actually does.

The expanded curriculum includes applied modules on Process lifecycle and state transitions, Threads, shared memory, and isolation, User mode versus kernel mode, System calls and API boundaries, Context switching and overhead. Lessons pair formal models with worked examples, diagrams or traces, failure analysis, practice questions, and references for independent verification.