What is Operating System?

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

Characteristics of OS

• Scheduling
• Memory Management
• Security
• Interact with different software
• Device Management
• File Management

Types of OS

• Batch OS
• Time sharing OS
• Distributed OS
• Network OS
• Real time OS

Advantages

• OS provides a GUI interface for the users in the form of menu, icons and buttons
• OS also alow us to sharing the resources with other users.
• It helps user to understand the function of a computer
• It can be easily updated

Disadvantages

• If the OS is corrupted than it will affect entire system & the computer system will not work
• Only some task run at a time

Difference between GUI and CUI

GUI

• GUI stands for graphical use interface
• GUI is very friendly and easy to use
• In GUI, more than one task can run at same time
• It require more memory. Example Windows, Linux etc.

CUI

• CUI stands for character user interface
• CUI is very confusing and difficult to use.
• It require less memory. Example MS DOS