It now consists of three operating system subfamilies that are released almost at the same time and share the same kernel: Windows: The operating system for mainstream personal computers, tablets and smartphones. The latest version is Windows 10.

How many Windows OS are there?

Microsoft Windows has seen nine major versions since its first release in 1985. Over 29 years later, Windows looks very different but somehow familiar with elements that have survived the test of time, increases in computing power and – most recently – a shift from the keyboard and mouse to the touchscreen.

What are the 5 types of Windows operating system?

Microsoft Windows Operating Systems for PCs

• MS-DOS – Microsoft Disk Operating System (1981) …
• Windows 1.0 – 2.0 (1985-1992) …
• Windows 3.0 – 3.1 (1990-1994) …
• Windows 95 (August 1995) …
• Windows 98 (June 1998) …
• Windows 2000 (February 2000) …
• Windows XP (October 2001) …
• Windows Vista (November 2006)