OR> (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)