Hackernews posts about DOS

DOS is an operating system developed by Microsoft in the 1980s for use on IBM-compatible PCs, characterized by its command-line interface and ability to run programs written in MS-DOS's proprietary language, x86 assembly code.

Related: Windows 3.1   8086  
  1. Visi on (DOS Software) (en.wikipedia.org)
  2. Why FreeDOS is a modern DOS (allthingsopen.org)