Lecture 01: Introduction to Operating Systems and Execution Management

1. What is an Operating System?
2. Types and Evolution of OS
3. Execution Management in OS
4. Kernel vs User Mode
5. Real-World Relevance and Case
6. Questions & Summary

Slide Deck

Key Takeaways

• The OS manages execution through processes, threads, and CPU scheduling.
• Kernel mode enables privileged operations; user mode ensures safety and isolation.
• System calls are the bridge between user programs and kernel services.
• Execution control is foundational to performance, security, and reliability.