What is Operating System?

Operating System is a collection of programs which manages all the resources of the computer system. It acts as an interface between user and hardware.

Characteristics of OS

• Scheduling
• Memory Management
• Security
• Interaction with software
• Device Management
• File Management

Types of OS

• Batch OS
• Time Sharing OS
• Distributed OS
• Network OS
• Real Time OS

Advantages

• Provides GUI interface
• Resource sharing
• User-friendly
• Easy to update

Disadvantages

• If OS fails, system stops
• Limited tasks at a time

Difference between GUI and CUI

GUI

• Graphical User Interface
• Easy to use
• Multi-tasking
• Requires more memory

CUI

• Character User Interface
• Difficult to use
• Uses commands
• Requires less memory