University Computing Services, the large bureaucracy responsible for IU's computer clusters and computer services. UCS maintained a dozen and a half clusters of computers usable by any student, as well as the central computers such as a cluster of VAX machines and several running unix. They also provided consultants in the labs, ran the networks that kept them together, and did some other related things, like teach people how to run WordPerfect. Aside from UCS, other organizations ran computers in offices and some classrooms, as well as some libraries and dorms. Other campuses, like IUSB, had their own support mechanisms. UCS was previously called BACS and later changed its name to UITS in a largely useless game of musical chairs.