Microsoft Windows Nt

Microsoft Windows NT was an operating system produced by Microsoft that was originally based on OS/2 but later changed to a 32-bit version of the Windows API. It included several major releases from version 3.1 to 4.0. Later versions were called Windows 2000 and Windows XP. Windows NT used a layered design to hide hardware and provide API functionality. When first released in 1993, it was intended for high-end systems as a network server or workstation and did not replace Windows 95.