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 for IBM 7090
From The Free On-line Dictionary of Computing (30 December 2018) :

  IBM 7090
      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
     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).

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