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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 Sigma series was commercially retired in the 1970s when Xerox, which bought SDS in 1969, left the mainframe computer business.".
- 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 wikiPageRevisionID "605022484".
- SDS_Sigma_series hasPhotoCollection SDS_Sigma_series.
- 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 type Artifact100021939.
- SDS_Sigma_series type Computer103082979.
- SDS_Sigma_series type Device103183080.
- SDS_Sigma_series type DigitalComputer103196324.
- SDS_Sigma_series type Instrumentality103575240.
- SDS_Sigma_series type Machine103699975.
- SDS_Sigma_series type Mainframe103711711.
- SDS_Sigma_series type MainframeComputers.
- SDS_Sigma_series type Object100002684.
- SDS_Sigma_series type PhysicalEntity100001930.
- SDS_Sigma_series type ScientificDataSystemsComputers.
- SDS_Sigma_series type Whole100003553.
- 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 label "Serie SDS Sigma".
- SDS_Sigma_series label "Sigma 7".
- 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 sameAs SDS_Sigma_series.
- SDS_Sigma_series wasDerivedFrom SDS_Sigma_series?oldid=605022484.
- SDS_Sigma_series depiction Scientific_Data_Systems_Sigma_5_computer_front_panel.jpg.
- SDS_Sigma_series isPrimaryTopicOf SDS_Sigma_series.