Ocessor> (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)