(Digital cameras and photo printers) Mathematical Processing Unit. Either an integrated or separate component of a processor, which carries out the mathematical calculations, e.g. for certain image processing tasks. Found on http://www.encyclo.co.uk/local/20472
Main Processing Unit for the pinball machine. This is the computer circuit board that controls the game functions and contains the ROMs for the game. The brains, if you will. Found on https://pinwiki.com/wiki/index.php?title=Glossary