Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/IBM_System/4_Pi> ?p ?o }
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- 4_Pi abstract "The IBM System/4 Pi is a family of radiation hardened avionics computers used, in various versions, on the B-52 Stratofortress bomber, the F-15 Eagle fighter, E-3 Sentry, NASA's Skylab, MOL, and the Space Shuttle, as well as other aircraft. It descends from the System/360 mainframe family of computers. The Skylab space station employed the model TC-1, which had a 16-bit word length and 16,384 words of memory with a custom input/output assembly.The top-of-the-line 4 Pi is the AP-101, used in the B-52. The U.S. Navy used a similar variant, the AN/ASQ-155, in the carrier based A-6E/A-6E TRAM medium attack aircraft. The Shuttle is controlled by five AP-101 computers, four of which are arranged in a redundant configuration, with the fifth as backup.The name of the system is derived from the fact that the angular measure of a complete sphere (solid angle) is 4π steradians, while the angular measure of a complete circle is 360 degrees; hence System/4 Pi and System/360. This implies that System/4 Pi is a version of the IBM System/360 for the three-dimensional world of avionics.".
- 4_Pi thumbnail Space_Shuttle_upgraded_GPC.jpg?width=300.
- 4_Pi wikiPageExternalLink space_shuttle.html.
- 4_Pi wikiPageExternalLink space_skylab.html.
- 4_Pi wikiPageExternalLink Ch3-2.html.
- 4_Pi wikiPageID "858524".
- 4_Pi wikiPageLength "3443".
- 4_Pi wikiPageOutDegree "30".
- 4_Pi wikiPageRevisionID "666852458".
- 4_Pi wikiPageWikiLink 16-bit.
- 4_Pi wikiPageWikiLink A-6_Intruder.
- 4_Pi wikiPageWikiLink ASQ-155.
- 4_Pi wikiPageWikiLink AP-101.
- 4_Pi wikiPageWikiLink Attack_aircraft.
- 4_Pi wikiPageWikiLink Avionics.
- 4_Pi wikiPageWikiLink B-52_Stratofortress.
- 4_Pi wikiPageWikiLink Boeing_B-52_Stratofortress.
- 4_Pi wikiPageWikiLink Boeing_E-3_Sentry.
- 4_Pi wikiPageWikiLink Category:Guidance_computers.
- 4_Pi wikiPageWikiLink Category:IBM_computers.
- 4_Pi wikiPageWikiLink Computer.
- 4_Pi wikiPageWikiLink Degree_(angle).
- 4_Pi wikiPageWikiLink Dimension.
- 4_Pi wikiPageWikiLink E-3_Sentry.
- 4_Pi wikiPageWikiLink F-15_Eagle.
- 4_Pi wikiPageWikiLink Grumman_A-6_Intruder.
- 4_Pi wikiPageWikiLink IBM.
- 4_Pi wikiPageWikiLink IBM_AP-101.
- 4_Pi wikiPageWikiLink 360.
- 4_Pi wikiPageWikiLink IBM_mainframe.
- 4_Pi wikiPageWikiLink Manned_Orbital_Laboratory.
- 4_Pi wikiPageWikiLink Manned_Orbiting_Laboratory.
- 4_Pi wikiPageWikiLink McDonnell_Douglas_F-15_Eagle.
- 4_Pi wikiPageWikiLink NASA.
- 4_Pi wikiPageWikiLink Pi.
- 4_Pi wikiPageWikiLink Radiation_hardened.
- 4_Pi wikiPageWikiLink Radiation_hardening.
- 4_Pi wikiPageWikiLink Redundancy_(engineering).
- 4_Pi wikiPageWikiLink Skylab.
- 4_Pi wikiPageWikiLink Solid_angle.
- 4_Pi wikiPageWikiLink Space_Shuttle_program.
- 4_Pi wikiPageWikiLink Steradian.
- 4_Pi wikiPageWikiLink 360.
- 4_Pi wikiPageWikiLink Word_(computer_architecture).
- 4_Pi wikiPageWikiLink Word_(data_type).
- 4_Pi wikiPageWikiLink File:Space_Shuttle_upgraded_GPC.jpg.
- 4_Pi wikiPageWikiLinkText "AN/ASQ-155".
- 4_Pi wikiPageWikiLinkText "IBM System/4 Pi".
- 4_Pi wikiPageWikiLinkText "Skylab Onboard Computers".
- 4_Pi wikiPageWikiLinkText "Space Shuttle General Purpose Computer".
- 4_Pi hasPhotoCollection 4_Pi.
- 4_Pi wikiPageUsesTemplate Template:Cite_journal.
- 4_Pi wikiPageUsesTemplate Template:Component-aircraft-stub.
- 4_Pi wikiPageUsesTemplate Template:Guidance_Computer.
- 4_Pi wikiPageUsesTemplate Template:Merge_from.
- 4_Pi wikiPageUsesTemplate Template:Reflist.
- 4_Pi wikiPageUsesTemplate Template:Space-stub.
- 4_Pi subject Category:Guidance_computers.
- 4_Pi subject Category:IBM_computers.
- 4_Pi hypernym Family.
- 4_Pi type Avionic.
- 4_Pi type Component.
- 4_Pi type Computer.
- 4_Pi type Product.
- 4_Pi comment "The IBM System/4 Pi is a family of radiation hardened avionics computers used, in various versions, on the B-52 Stratofortress bomber, the F-15 Eagle fighter, E-3 Sentry, NASA's Skylab, MOL, and the Space Shuttle, as well as other aircraft. It descends from the System/360 mainframe family of computers.".
- 4_Pi label "IBM System/4 Pi".
- 4_Pi sameAs 4_Pi.
- 4_Pi sameAs 4_Pi.
- 4_Pi sameAs m.03hxm2.
- 4_Pi sameAs Q3146519.
- 4_Pi sameAs Q3146519.
- 4_Pi wasDerivedFrom 4_Pi?oldid=666852458.
- 4_Pi depiction Space_Shuttle_upgraded_GPC.jpg.
- 4_Pi isPrimaryTopicOf 4_Pi.
