Intel 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 {page}d MMU "behind" the segmented one. The 80286 was the processor in the {IBM PC AT} {personal computer}. (1995-02-21)