International Computers and Tabulators

The London University machine still exists (January 2006) and is being reinstated to working condition by a group of enthusiasts.

The ICT 1302, used similar technology to the 1300/1301 but was a multiprogramming system capable of running three programs in addition to the Executive.

The ICT 1400 was a first generation computer using thermionic valves, but was overtaken by transistor technology in 1959 and no sales were made.

RCA also sold the design to Siemens in Germany and Compagnie des Machines Bull in France who called it the Gamma 30.

It was decided to adapt this machine to use the 'Standard Interface', and it was put on the market as the ICT 1904, the first in a range of upward-compatible computer systems.

At the time of the merger English Electric Computers was in the process of making a line of large IBM System/360-compatible mainframes based on the RCA Spectra 70, which was sold as the ICL System-4.