Source : Free On-Line Dictionary of Computing

Windows NT 3.1
     
         {Microsoft}'s first version of {Windows
        NT}, released in September 1993, price UKP 395, after having
        been in {beta-test} for as long as anyone could remember.
     
        The person responsible for {VMS} on the {DEC VAX} [who?] was
        also responsible for Windows NT.  Incrementing each letter in
        VMS yields WNT.
     
        {(http://www.win2000mag.com/Articles/Index.cfm?ArticleID=4494)}.
     
        (2000-08-12)