ICL 2966 Logo

The National Museum of Computing’s ICL (International Computers Limited) 2966 mainframe was used by TARMAC, a construction company, until 1999. It was the last in a series of ICL machines TARMAC had owned. With the use of punched cards declining from the late 1970s, it was extremely unusual for this machinery to still be in operation. At the end of its working life, the 2966 was saved by the Computer Conservation Society as it was thought to be the last surviving of its kind. The ICL 2966 is the largest computer in TNMOC’s collection - five large cabinets are required just to hold the central processing unit!