CSIRAC

Also known as CSIR Mk 1, CSIR Mk I

CSIRAC (; Commonwealth Scientific and Industrial Research Automatic Computer), originally known as CSIR Mk 1, was Australia's first digital computer, and the fifth stored-program computer in the world. It is the oldest surviving first-generation electronic computer (the Zuse Z4 at the Deutsches Museum is older, but was electro-mechanical, not electronic). It was the first computer to play digital music.