Memory Management Unit. A chip that comes with 68030,040 and 060 processors that allows the use of Virtual Memory. It also prevents crashed programs from affecting the operating system and the other software running. At present, it is not used on the Amiga (apart from 3rd party virtual memory). These functions would require being built into the OS ...
Manned Maneuvering Unit.
Memory Management Unit
Manned Manoeuvring Unit - a jet backpack worn by astronauts which lets them whizz around in space.
Memory Management Unit
Manchester Materials Unit - Materials Centre of Excellence
Memory Management Unit, part of the CPU hardware that enforces memory boundaries, and throw page faults, upon which the OS builds its coherent protection. The MMU maps virtual memory to actual, where protections allow.