The University of Kent system went live in December 1979, and ran on the least powerful machine in the ICL 2900 range - an ICL 2960, with 2MB of memory, executing about 290k instructions per second.
The museum also includes the world's oldest working digital computer (the Harwell Dekatron / WITCH), machines from the 1960s such as the Elliott 803 and 905, an ICL 2966 mainframe from the 1980s, a wide range of analogue computers, a hands-on retrocomputing gallery, and several restoration projects such as the PDP-8 and the PDP-11-based air traffic control system from London Terminal Control Centre at West Drayton near London.