Operating Systems Explained | How Operating Systems Work (For Beginners & IT Pros)

Introduction to Operating Systems00:00:00

An operating system (OS) is the fundamental software that manages computer hardware and runs applications, acting as a middle layer to prevent chaotic direct hardware communication.

Core Responsibilities of an OS00:01:31

The kernel, the OS's core program, performs four primary jobs: process management through scheduling, memory management for stability and security, file system organization, and device management via hardware drivers.

System Interaction and Booting00:03:33

Applications request resources from the OS using system calls. The system also utilizes user and kernel modes for security, with a boot sequence that initializes hardware and loads the kernel into memory.

Types of Operating Systems00:04:11

Operating systems are ubiquitous, ranging from desktop platforms like Windows, macOS, and Linux to mobile systems like Android and iOS, as well as specialized systems for servers and smart devices.