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1 definition found
 for GE-645
From The Free On-line Dictionary of Computing (30 December 2018) :

      A computer built by General Electric, the
     successor to the GE-635, designed to provide the extra CPU
     features required by the Multics project.
     The GE-645 was designed in 1965 by John Couleur and Edward
     Glaser at MIT.  It had several security levels and
     instructions for handling virtual memory.  Addressing used
     an 18-bit segment in addition to the 18-bit address,
     dramatically increasing the theoretical memory size and making
     virtual memory easier to support.
     Design of the GE-645's successor, the GE-655, started in 1967.

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