The Free On-line Dictionary of Computing (30 December 2018):

Intel 80286
80286

    (Or "286", "i286") A microprocessor developed by
   Intel.  THe 80286 processor has a 16-bit data bus and
   incorporates a memory management unit that allowed a limited
   amount of multitasking.  The 80286 only has a segmented MMU
   while the later processors add a paged MMU "behind" the
   segmented one.

   The 80286 was the processor in the IBM PC AT personal
   computer.

   (1995-02-21)