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Windows NT

(Windows New Technology) A 32-bit operating system from Microsoft for Intel x86 CPUs. Available in separate client and server versions, it included built-in networking and preemptive multitasking. Windows NT was introduced in 1993 as Version 3.1 with the same user interface as Windows 3.1. In 1996, Version 4.0 was changed to the Windows 95 desktop (see table below).

A New Lineage
Unlike Windows 95/98, NT supported multiprocessing (see SMP), added security and administrative features and offered a dual boot capability. Designed for enterprise use, each application could access 2GB of virtual memory. NT did not support Plug and Play, but it was later added in Windows 2000 and XP, also based on the NT core technology. NT 4 Server, Enterprise Edition supported clustering and failover.

For x86 Machines Only
NT ran 16-bit DOS and Windows applications in its own emulation mode (see NTVDM) and also provided a command processor that executed DOS commands. Support for the PowerPC and MIPS platforms was planned and later dropped. Support for Alpha servers reached the beta stage, but was also dropped. See Windows.

          Year       Official
   NT     Intro      Name of NT
 Version        GUI  Client/Server Version

 NT 3.1   1993  3.x  NT/NT Advanced Server
 NT 3.5   1994  3.x  NT/NT Advanced Server
 NT 3.51  1995  3.x  NT/NT Advanced Server

 NT 4.0   1996  95   NT Workstation/
                     NT Server

  3.x = Windows 3.x Program Manager
   95 = Windows 95 Start menu

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