XDS Sigma 3 Computer - Reference Manual

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The Xerox Data Systems Sigma 3 was a mainframe computer in the company's Sigma range. Earlier systems had the name 'SDS Sigma...', as the company was known as Scientific Data Systems before a buyout by Xerox in 1969.

Confusingly, the numbers of the Sigma systems are not in order. The 16 bit machines were the following:

Sigma 2 (1966)
Sigma 3 (1969)

The 32-bit machines were the following:

Sigma 7 (1966)
Sigma 5 (1967)
Sigma 6 (1970)
Sigma 9 (1971)
Sigma 8 (1972)
Sigma 9 model 2 (?)
Sigma 9 model 3 (1973)

This manual is for the Sigma 3. It covers the basics of the machine and more complicated instructions and commands.

Reference Number : 90 15 92 B

Date Published : February 1970

Manufacturer : Xerox Development Systems

Platform : XDS Sigma 3

Format : A4 / PDF

This exhibit has a reference ID of CH41580. Please quote this reference ID in any communication with the Centre for Computing History.

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