IBM 7090


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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).
References in periodicals archive ?
He was design manager of prototype versions of the IBM 7090 and 7094/II, and later for the System 360 Model 91 Central Processing Unit.
In 1960, the cost to lease an IBM 7090 mainframe, with transistors instead of vacuum tubes in its memory and logic circuits, was about $20,000 per month.
The two IBM 7090 computers determined powered flight trajectory parameters and the present position of the spacecraft.