PS1

PS1, PS-1, PS/1 or PS One may refer to:

• MoMA PS1 (derived from "Primary School One"), American contemporary art institution
• "$PS1": the environment variable in the Bourne shell and variants which specifies the command prompt.
• IBM PS/1, IBM Personal System/1 series of home computers
• Pan-STARRS' first telescope, called PS1
• PostScript Type 1 Font
• PlayStation (console), video game console released by Sony in 1994
  • PS One (console) a miniature version of the PlayStation released in 2000
• Phantasy Star (video game), the first in the Phantasy Star series
• .ps1, the extension of a Microsoft PowerShell script file

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