In Ubuntu OS:
(i) Create a file: By right clicking in the desktop and also files be created by using file menu.
(ii) Delete a file: By using right-click choosing a move to trash or by using the menu.
(iii) Rename a file: By using right-click and choosing rename option.
(iv) Save a file: Press ctrl + x or F2 to exit. You will. then be asked if you want to save. (or) Press ctrl+ 0 or F3 and ctrl + x or F2 for save and exit.
In Windows OS:
(i) Create file: Open an application and create by using file menu.
(ii) Delete a file: By right click on a file and choosing the delete option to delete a file.
(iii) Rename a file: By right click on a file and choosing rename option to rename a file.
(iv) Save file: Press ctrl+S or file - save to save the file.

S.No	Navigational method	Located on	Ideally suited for
1.	Start button	Task bar	Quick access common apps and settings
2.	My computer	Desktop	Exploring your disk drives and using system tools.
3.	Windows Explorer	Task bar	Seeing hierarchy of all computer contents and resources in one window.
4.	Quick Launch	Task bar	To open the programs quickly.

S.No Versions Logo Year Prominent feature 1. Windows 1.x 1985 1. Introduction of GUI in 16 - bit. processor
2. Mouse was introduced as an input device 2. Windows 2.x 1987 1. Supports to minimize or maximize windows.
2. Control panel feature was introduced with
various system settings and customizing options. 3. Windows 3.x 1992 1. Introduced the concept of multitasking.
2. Supported 256 colors which brought a more
modern, colorful look to the interface. 4. Windows 95 1995 1. Introduced Start button, the taskbar, Windows Explorer and Start menu.
2. Introduced 32 - bit processor and focused more on multitasking. 5. Windows 98 1998 1. Integration of the Web browser (Internet Explorer) with the Operating System.
2. DOS gaming began to disappear as Windows-based games improved.
3. Plug and play feature was introduced. 6. Windows NT   Designed to act as servers in network. 7. Windows Me 2000 It introduced automated system diagnostics and recovery tools. 8. Windows 2000 2000 1. Served as an Operating System for business
desktop and laptop systems.
2. Four versions of Windows 2000 were released: Professional (for business)
3. desktop and laptop systems), Server (both a
Web server and an office server),
4. Advanced Server (for line-of-business 
applications) and Data Centre Server (for high traffic computer networks). 9. Windows XP 2001 1. Introduced 64-bit Processor.
2. Improved Windows appearance with themes and offered a stable version 10. Windows Vista 2006 Updated the look and feel of Windows 11. Windows 7 2009 Booting time was improved, introduced new user interfaces like Aero Peek, pinning programs to the taskbar, handwriting recognition etc, and Internet Explorer 8. 12. Windows 8 2012 1. Windows 8 was faster than previous versions of Windows.
2. Start button was removed
3. Windows 8 takes better advantage of multicore processing, solid-state drives (SSD), touch screens, and other alternate input methods.
4. Served as a common platform for mobile and computer. 13. Windows 10 2015 1. Start Button was added again.
2. Multiple desktops.
3. Central Notification Center for App notification and quick actions.
4. Cortana voice-activated personal assistant.

Elements of Ubuntu:
Search your Computer Icon:
This icon is equal to search button in Windows OS. Here, you have to give the name of the File or Folder for searching them.
Files:
This icon is equivalent to My Computer icon. From here, you can directly go to Desktop, Documents and so on.
Firefox Web Browser:
By clicking this icon, you can directly browse the internet. This is equivalent to clicking the Web Browser in Task bar in Windows.
LibreOffice Writer:
This icon will directly take you to document preparation application like MS Word in Windows,
Libre Office Cale:
This icon will open LibreOffice Cale application. It is similar to MS Excel in Windows.
LibreOffice Impress:
By clicking this icon, you can open LibreOffice Impress to prepare any presentations in Ubuntu like MS PowerPoint.
Ubuntu Software Icon:
This icon will let you add any additional applications you want. This can be done by clicking the Update option at the top right corner of that screen.
Online Shopping icon:
Using this icon user can buy and sell any products online.
System Settings Icons:
This icon is similar to the Control panel in the Windows Operating System. But here, you need to authenticate the changes by giving your password. You cannot simply change as you do in Windows.
Trash:
This icon is the equivalent of Recycle bin of windows OS. All the deleted Files and Folders are moved here.