DOS (Disambiguation)

DOS can stand for either:

Disk Operating System

• for IBM Mainframe systems (1965)
  • System/360: DOS/360
  • System/370: DOS/VS, DOS/VSE, SSX/VSE, VSE/SP
  • ESA: VSE/ESA, z/VSE
• for Digital PDP-11 (1970)
  • DOS-11
• for Apple II (1978)
  • Apple DOS
• for Atari 8-bit machines (1979)
  • Atari DOS
• for IBM PC systems (1981)
  • IBM PC DOS
• for MSX (1984)
  • MSX-DOS