Operating System

Operating System

1. is a software that acts as an interface between computer hardware components and the user

2. Examples

   • Windows
   • Android
   • IOS
   • Mac OS

3. Types of Operating System

   • Batch Operating System
   • Multitasking/Time Sharing OS
   • Multiprocessing
   • Real Time OS
   • Distributed OS
   • Network OS
   • Mobile OS

4. Structure of the Operating System

   • Application Program
   • System Program
   • MS - DOS device Drivers
   • Rom Bios Device Drivers
   • MS _ DOS Structure

5. Functions of Operating System

   • Process management
   • Memory management
   • File management
   • Device Management
   • I/O System Management
   • Secondary-Storage Management
   • Security
   • Command interpretation
   • Job accounting
   • Networking
   • Communication management

6. Characteristics of the Operating System

   • Speed
   • Compatibility
   • Lower Hardware Requirements
   • Search and Organization
   • Safety and Security
   • Interface and Desktop

7. Advantages and Disadvantages of the Operating System

   • Advantages
     • easy to use
     • allow abstraction
     • environment in which a user may execute programs
     • Acts as an intermediator between all hardware's and software's of the system
     • It provides the computer system resources with easy to use format
   • Disadvantages
     • It is never entirely secure as a threat can occur at any time
     • If any issue occurs in OS, you may lose all the contents which have been stored in your system
     • Operating system's software is quite expensive for small size organization which adds burden on them