Computer History: XEROX Sigma Computers 1969-1975 XDS, San Antonio Gas Electric, PARC Honeywell 

For discussion and comment, we are sharing this rare view of early XEROX Corporation and some of the Sigma computers. Xerox purchased Scientific Data Systems (SDS) in 1969, and continued the Sigma computer line until 1975, when it sold its Xerox Data Systems division to Honeywell Information Systems. This presentation includes some brief history and an ORIGINAL XEROX FILM about the San Antonio Gas and Electric Power System and its large scale Xerox computer system in the 1970's. The Xerox footage is undated, but we calculate it is from about 1973 or 1974.
For 2k and 4K stock footage, visit:
www.periscopefi...
Eratta: The price of a new Sigma 9 was about $1.76 million in 1970, per a NY Times article:
NYT article: www.nytimes.co...
Xerox Corporation background at Bitsavers.org
archive.org/de...
Announcement for the Xerox 550 and 560 systems.
bitsavers.infor...