Definitely true. Mike is sort of a mash-up of the robots of I Robot (short stories written from 1940-1950), R. Daneel Olivaw (first appearing in the Caves of Steel, 1953-1954), and his huge Multivac computer (appearing in many short stories, first in 1955). Multivac was a huge (varying between building-size and city-size) computer that controls all of earth in some stories, but it doesn't have a personality. The robots, have personalities, especially by the time you get to R. Daneel Olivaw (and also Stephen Byerley), but aren't huge world-ruling systems. If anything, Mike is most like the world-ruling Machines in the last story in I Robot, the Evitable Conflict, written in 1950, though we don't really get insight into their personalities.
Bruce