What is an Operating System?
An Operating System (OS) is system software that acts as an interface between the user and computer hardware. It manages hardware resources and provides services for application programs.
1. Batch Operating System
In a Batch Operating System, similar jobs are collected and executed together without user interaction.
2. Multiprogramming Operating System
Multiple programs are kept in memory at the same time. The CPU switches between them to improve utilization.
3. Time Sharing Operating System
Many users can access the system simultaneously. Each user gets a small time slice of CPU.
4. Real-Time Operating System (RTOS)
Processes data and responds within a fixed time limit. Used in medical systems, robotics, and aircraft control.
5. Distributed Operating System
Manages multiple computers connected through a network and makes them appear as a single system.
6. Network Operating System
Provides networking services such as file sharing, printer sharing, and user management.
Examples of Operating Systems
- Windows
- Linux
- Unix
- macOS
- Android
- iOS