Windows 3.1x (codenamed Janus) is a series of
16-bit operating systems produced by
Microsoft for use on personal computers. The series began with Windows 3.1, which was first sold during April 1992 as a successor to
Windows 3.0. Subsequent versions were released between 1992 and 1994 until the series was superseded by
Windows 95. During its lifespan, Windows 3.1 introduced several enhancements to the still
MS-DOS-based platform, including improved system stability, expanded support for multimedia,
TrueType fonts, and
workgroup networking.