Company Confidential Computer Design Documents from the 1971 - XDS

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These have been kindly donated by the estate of Brian Warner, Who was the chief designer Trans Sigma and Product Planning 1970-1972.

Safe - a Simultaneous access filing engine, successor to Sigma 3
The accompanaying hardbook notebook contains basic bit pattern information for URSA, which may have been another name for Sigma 3.

Date : 1972

Physical Description : Plastic Sheets front and back Document as detailed above

This exhibit has a reference ID of CH46309. Please quote this reference ID in any communication with the Centre for Computing History.