Microsoft Windows r1 (See the current copy)

Microsoft(R) Windows(R)

See also Win32

History:

  1. December 1980: 86-DOS v0.33
  2. April 1981: 86-DOS v1.0
  3. July 1981: 86-DOS v1.14/MS-DOS v1.01
  4. March 1982: MS-DOS 1.25