SDS Sigma series

The SDS Sigma series is a series of computers that were introduced by Scientific Data Systems in 1966.The first machines in the series are 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. The Xerox 500 series computers, introduced starting in 1973, are 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.

SDS Sigma series

The SDS Sigma series is a series of computers that were introduced by Scientific Data Systems in 1966.The first machines in the series are 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. The Xerox 500 series computers, introduced starting in 1973, are 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.