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What (who) is IBM 7090 - definition

SECOND GENERATION (C. 1959) SCIENTIFIC MAINFRAME

IBM 7094; IBM 7094 Model II; IBM 7094 II

IBM 7090

<computer> A transistorised version of the IBM 709 which was a very popular high end computer in the early 1960s. The 7090 had 32Kbytes of 36-bit core memory and a hardware {floating point unit}. Fortran was its most popular language, but it supported many others. It was later upgraded to the {IBM 7094}, and a scaled down version, the IBM 7040 was also introduced. IBM 7090s controlled the Mercury and Gemini space flights, the Balistic Missile Early Warning System (until well into the 1980s), and the CTSS time sharing system at MIT. The 7090 was not good at unit record I/O, so in small configurations an IBM 1401 was used for SPOOL I/O and in large configurations (such as a 7090/94) a 7040/44 would be directly coupled and dedicated to handling printers and {card readers}. (See the film Dr Strangelove). (1999-01-19)

IBM 7090

The IBM 7090 is a second-generation transistorized version of the earlier IBM 709 vacuum tube mainframe computer that was designed for "large-scale scientific and technological applications". The 7090 is the fourth member of the IBM 700/7000 series scientific computers.

https://en.wikipedia.org/wiki/IBM_7090

IBM 7094

<computer> A faster version of the IBM 7090 with more {index registers}. (1997-02-23)

Wikipedia

IBM 7090

The IBM 7090 is a second-generation transistorized version of the earlier IBM 709 vacuum tube mainframe computer that was designed for "large-scale scientific and technological applications". The 7090 is the fourth member of the IBM 700/7000 series scientific computers. The first 7090 installation was in December 1959. In 1960, a typical system sold for $2.9 million (equivalent to $21 million in 2021) or could be rented for $63,500 a month (equivalent to $452,000 in 2021).

The 7090 uses a 36-bit word length, with an address space of 32,768 words (15-bit addresses). It operates with a basic memory cycle of 2.18 μs, using the IBM 7302 Core Storage core memory technology from the IBM 7030 (Stretch) project.

With a processing speed of around 100 Kflop/s, the 7090 is six times faster than the 709, and could be rented for half the price. An upgraded version, the 7094 was up to twice as fast. Both the 7090 and the 7094 were withdrawn from sale on July 14, 1969, but systems remained in service for more than a decade after.

https://en.wikipedia.org/wiki/IBM 7090