ISBN: | 978-5-5149-7576-1 |
High Quality Content by WIKIPEDIA articles! 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.