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- SDS_Sigma_series abstract "The SDS Sigma series was a series of computers that was introduced by Scientific Data Systems in 1966.The first machines in the series were the 16-bit Sigma 2 and the 32-bit Sigma 7; the Sigma 7 was the first 32-bit computer released by SDS. At the time the only competition for the Sigma 7 was the IBM 360.Memory size increments for all SDS/XDS/Xerox computers was stated in kWords, not kBytes. For example, the Sigma 5 base memory was 16K 32-Bit words (64K Bytes). Maximum memory was limited by the length of the instruction address field of 17 bits, or 128K Words (512K Bytes). Although this is a trivial amount of memory in today's technology, Sigma systems performed their tasks exceptionally well, and few were deployed with, or needed, the maximum 128K Word memory size.The Xerox 500 series computers, introduced starting in 1973, were compatible upgrades to the Sigma systems using newer technology.In 1975 Xerox sold its computer business to Honeywell, Inc. which continued support for the Sigma line for a time.The Sigma 9 may hold the record for the longest lifetime of a machine selling near the original retail price. Sigmas 9s were still in service in 1993. In 2011 the Living Computer Museum in Seattle, Washington acquired a Sigma 9 from a service bureau (Applied Esoterics/George Plue Estate) and has made it operational. That Sigma 9 CPU was at the University of Southern Mississippi until Nov. 1985 when Andrews University purchased it and took it to Michigan. In Feb. 1990 Andrews University via Keith Calkins sold and delivered it to Applied Esoterics in Flagstaff. Keith Calkins made the Sigma 9 functional for the museum in 2012/13 and brought up the CP-V operating system in Dec. 2014. The various other system components came from various other user sites, such as Marquette, Samford, Xerox/Dallas.".
- SDS_Sigma_series thumbnail Scientific_Data_Systems_Sigma_5_computer_front_panel.jpg?width=300.
- SDS_Sigma_series wikiPageExternalLink 900959C_Sigma5_RefMan_Sep68.pdf.
- SDS_Sigma_series wikiPageExternalLink 901713B_Sigma_6_Reference_Man_Jun71.pdf.
- SDS_Sigma_series wikiPageExternalLink 900950J_Sigma7_RefMan_Oct73.pdf.
- SDS_Sigma_series wikiPageExternalLink 901749A_SIGMass8_Ref_Man_Jan71.pdf.
- SDS_Sigma_series wikiPageExternalLink 901733C-1_Sigma9_RefMan_Apr74.pdf.
- SDS_Sigma_series wikiPageID "12797090".
- SDS_Sigma_series wikiPageLength "19647".
- SDS_Sigma_series wikiPageOutDegree "38".
- SDS_Sigma_series wikiPageRevisionID "677415476".
- SDS_Sigma_series wikiPageWikiLink 16-bit.
- SDS_Sigma_series wikiPageWikiLink 32-bit.
- SDS_Sigma_series wikiPageWikiLink Analogue_electronics.
- SDS_Sigma_series wikiPageWikiLink Andrews_University.
- SDS_Sigma_series wikiPageWikiLink Assembly_language.
- SDS_Sigma_series wikiPageWikiLink Byte.
- SDS_Sigma_series wikiPageWikiLink Carnegie_Mellon_University.
- SDS_Sigma_series wikiPageWikiLink Category:1965_introductions.
- SDS_Sigma_series wikiPageWikiLink Category:Mainframe_computers.
- SDS_Sigma_series wikiPageWikiLink Category:Scientific_Data_Systems_computers.
- SDS_Sigma_series wikiPageWikiLink Category:Xerox.
- SDS_Sigma_series wikiPageWikiLink Computer.
- SDS_Sigma_series wikiPageWikiLink Computer_History_Museum.
- SDS_Sigma_series wikiPageWikiLink Control_unit.
- SDS_Sigma_series wikiPageWikiLink Cross_assembler.
- SDS_Sigma_series wikiPageWikiLink 360.
- SDS_Sigma_series wikiPageWikiLink 360_and_successors.
- SDS_Sigma_series wikiPageWikiLink Duplex_(telecommunications).
- SDS_Sigma_series wikiPageWikiLink Hard_disk_drive.
- SDS_Sigma_series wikiPageWikiLink Honeywell.
- SDS_Sigma_series wikiPageWikiLink Honeywell,_Inc..
- SDS_Sigma_series wikiPageWikiLink IBM_360.
- SDS_Sigma_series wikiPageWikiLink 360.
- SDS_Sigma_series wikiPageWikiLink Magnetic-core_memory.
- SDS_Sigma_series wikiPageWikiLink Michigan_State_University.
- SDS_Sigma_series wikiPageWikiLink Microcode.
- SDS_Sigma_series wikiPageWikiLink Microprogramming.
- SDS_Sigma_series wikiPageWikiLink Random-access.
- SDS_Sigma_series wikiPageWikiLink Random_access.
- SDS_Sigma_series wikiPageWikiLink SDS_940.
- SDS_Sigma_series wikiPageWikiLink Scientific_Data_Systems.
- SDS_Sigma_series wikiPageWikiLink Simplex_communication.
- SDS_Sigma_series wikiPageWikiLink Universal_Time-Sharing_System.
- SDS_Sigma_series wikiPageWikiLink University_of_Southern_Mississippi.
- SDS_Sigma_series wikiPageWikiLink Virtual_memory.
- SDS_Sigma_series wikiPageWikiLink Word_(computer_architecture).
- SDS_Sigma_series wikiPageWikiLink Word_(data_type).
- SDS_Sigma_series wikiPageWikiLink Xerox_500_series.
- SDS_Sigma_series wikiPageWikiLink Xerox_Operating_System.
- SDS_Sigma_series wikiPageWikiLink File:LCM_-_Xerox_Sigma_9_(right)_and_related_equipment_-_01.jpg.
- SDS_Sigma_series wikiPageWikiLink File:SDS_RAD_drive.jpg.
- SDS_Sigma_series wikiPageWikiLink File:Scientific_Data_Systems_Sigma_5_computer_front_panel.jpg.
- SDS_Sigma_series wikiPageWikiLinkText "SDS Sigma 6".
- SDS_Sigma_series wikiPageWikiLinkText "SDS Sigma 7".
- SDS_Sigma_series wikiPageWikiLinkText "SDS Sigma series".
- SDS_Sigma_series wikiPageWikiLinkText "Sigma 7".
- SDS_Sigma_series wikiPageWikiLinkText "Sigma 9".
- SDS_Sigma_series wikiPageWikiLinkText "Sigma series machines".
- SDS_Sigma_series wikiPageWikiLinkText "Sigma series".
- SDS_Sigma_series wikiPageWikiLinkText "Sigma".
- SDS_Sigma_series wikiPageWikiLinkText "Xerox Sigma 6".
- SDS_Sigma_series hasPhotoCollection SDS_Sigma_series.
- SDS_Sigma_series wikiPageUsesTemplate Template:Cite_book.
- SDS_Sigma_series wikiPageUsesTemplate Template:Reflist.
- SDS_Sigma_series subject Category:1965_introductions.
- SDS_Sigma_series subject Category:Mainframe_computers.
- SDS_Sigma_series subject Category:Scientific_Data_Systems_computers.
- SDS_Sigma_series subject Category:Xerox.
- SDS_Sigma_series hypernym Series.
- SDS_Sigma_series type Device.
- SDS_Sigma_series type TelevisionShow.
- SDS_Sigma_series type Class.
- SDS_Sigma_series type Computer.
- SDS_Sigma_series type Thing.
- SDS_Sigma_series type Q1067263.
- SDS_Sigma_series comment "The SDS Sigma series was a series of computers that was introduced by Scientific Data Systems in 1966.The first machines in the series were the 16-bit Sigma 2 and the 32-bit Sigma 7; the Sigma 7 was the first 32-bit computer released by SDS. At the time the only competition for the Sigma 7 was the IBM 360.Memory size increments for all SDS/XDS/Xerox computers was stated in kWords, not kBytes. For example, the Sigma 5 base memory was 16K 32-Bit words (64K Bytes).".
- SDS_Sigma_series label "SDS Sigma series".
- SDS_Sigma_series sameAs Serie_SDS_Sigma.
- SDS_Sigma_series sameAs Sigma_7.
- SDS_Sigma_series sameAs m.02x5bf9.
- SDS_Sigma_series sameAs Q11703763.
- SDS_Sigma_series sameAs Q11703763.
- SDS_Sigma_series wasDerivedFrom SDS_Sigma_series?oldid=677415476.
- SDS_Sigma_series depiction Scientific_Data_Systems_Sigma_5_computer_front_panel.jpg.
- SDS_Sigma_series isPrimaryTopicOf SDS_Sigma_series.