The SILLIAC (Sydney version of the Illinois Automatic Computer, i.e. the Sydney ILLIAC), an early computer built by the University of Sydney, Australia, was based on the ILLIAC and ORDVAC computers developed at the University of Illinois.
Like other early computers, SILLIAC was physically large. The computer itself was a single large cabinet 2.5 m high, 3 m wide and 0.6 m deep in one room. Its power supply occupied a second room and air conditioning required an additional room in the basement.
It ran until May 17, 1968, when it was replaced by a faster and bigger machine. Although it was then broken up, some pieces of SILLIAC are at the Powerhouse Museum and others are displayed at Sydney University.