IBM 7090
From Computer History Wiki
| IBM 7090 | |
| Manufacturer: | International Business Machines |
|---|---|
| Year First Shipped: | November, 1959 |
| Form Factor: | mainframe |
| Word Size: | 36 bits |
| Logic Type: | transistors |
| Memory Speed: | 2.2 µsec |
| Operating System: | SOS, IBSYS, IBJOB, CTSS |
| Predecessor(s): | IBM 709 |
| Successor(s): | IBM 7094 |
The IBM 7090 was IBM's first commercial transistor scientific mainframe (built at a time when computers for scientific and business computing used separate instruction sets).
It was upwardly compatible with its vacuum tube technology predecessor, the IBM 709. It had a performance of six times that of a 709, but only cost one third more.
It relied heavily on engineering from the STRETCH project; units such as power supplies, back panels and the memory unit were transplanted from STRETCH.
A pair of 7090's were used in the American Airlines SABRE real-time airline reservation system.
