PS1

Look up PS1 or PS/1 in Wiktionary, the free dictionary.

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

Biology

• Photosystem I, the second photosystem in the photosynthetic light reactions of plants

Art

• MoMA PS1 (derived from "Public School One"), American contemporary art institution

Education

• The name and designation for several public schools in the New York City Department of Education; see List of public elementary schools in New York City

Technology

• "$PS1", the environment variable in a command-line interface 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
• .ps1, the extension of a Microsoft PowerShell script file

Video Gaming

• PlayStation (console), video game console released by Sony in 1994
  • PS one a miniature version of the PlayStation released in 2000
• Phantasy Star (video game), the first in the Phantasy Star series
• PlanetSide, a MMOFPS video game published by Sony Online Entertainment

Transportation

• The boxcar in the PS line of post-war standardized freight cars from Pullman-Standard.