This chapter provides an introduction and overview of operating systems. It defines an operating system as a program that manages computer hardware and software resources and provides common services for computer programs. It describes the components of a computer system including hardware, operating system, application programs, and users. It then discusses the structure and functions of operating systems, including process management, memory management, storage management, protection and security, and distributed systems. It provides examples of different computing environments like traditional, client-server, peer-to-peer, and web-based computing.

1. Chapter 1: Introduction

9. Four Components of a Computer System

17. Interrupt Timeline

19. Two I/O Methods Synchronous Asynchronous

20. Device-Status Table

24. Storage-Device Hierarchy

28. Memory Layout for Multiprogrammed System

42. End of Chapter 1