bell called the 3b20d alu board, with its two separate bit-slice alus operating in parallel as an accuracy check, the "data manipulation unit" this sounds like a good band name or maybe intelligence agency department name https://documentation.nokia.com/cgi-bin/dbaccessfilename.cgi/303095_V1_UX%20RTR%20ARCH%20OVVW%203B20D.pdf#page=13