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Windows 1.0
x86 16-bit
It runs as a graphical, 16-bit multi-tasking shell on top of an existing MS-DOS installation, providing an environment which can run graphical programs designed for Windows -
Windows 2.0
x86 16-bit
Introduced more sophisticated keyboard-shortcuts[3] and the terminology of "Minimize" and "Maximize", as opposed to "Iconize" and "Zoom" in Windows 1.0. -
Windows 3.0
x86 16-bit
Includes a significantly revamped user interface as well as technical improvements to make better use of the memory management capabilities of Intel's 80286 and 80386 processors -
Windows 3.0 with Multimedia Extensions
x86 16-bit
Supports sound cards as well as CD-ROM drives -
Windows for Workgroups 3.11
x86 – 16-bit
Supports 32-bit file access, full 32-bit network redirectors, and VCACHE.386 file cache, shared between them. -
Windows 95
IA-32
Features significant improvements over its predecessor, Windows 3.1, most notably in the graphical user interface (GUI) and in its simplified "plug-n-play" features -
Windows 98
IA-32
Windows 98 is a hybrid 16-bit/32-bit[4] monolithic product with an MS-DOS based boot stage -
Windows 98 SE
IA-32
Includes fixes for many minor issues, improved WDM audio and modem support, improved USB support, the replacement of Internet Explorer 4.0 with Internet Explorer 5.0, Web Folders (WebDAV namespace extension for Windows Explorer),[29] and related shell updates -
Windows 2000
IA-32
Includes many system utilities such as the Microsoft Management Console and standard system administration applications. -
Windows XP
IA-32
It introduced a significantly redesigned graphical user interface and was the first version of Windows to use product activation in an effort to reduce its copyright infringement. -
Windows Vista for Business use
IA-32, x86
Redesigned shell and user interface to significant technical changes, with a particular focus on security features. -
Windows 7
IA-32,x64
Incremental upgrade to the Windows line, with the goal of being compatible with applications and hardware with which Windows Vista was already compatible -
Windows 8
Introduction of a user interface based around Microsoft's Metro design language with optimizations for touch-based devices such as tablets and all-in-one PCs -
Windows 8.1
IA-32, x64
New live tile sizes, deeper SkyDrive integration, and many other revisions. Windows 8 and Windows 8.1 has been subject to some criticism, such as removal of Start Menu -
Windows 10
IA-32, x64, ARM
Return of the Start Menu, a virtual desktop system, and the ability to run Windows Store apps within windows on the desktop rather than in full-screen mode
