History of Storage devices

Manchester Mark I Williams-Kilburn tube

1947

At Manchester University, Freddie Williams and Tom Kilburn develop the Williams-Kilburn tube. The tube, tested in 1947, was the first high-speed, entirely electronic memory.

EDSAC

1949

Maurice Wilkes and his team at the University of Cambridge construct the Electronic Delay Storage Automatic Calculator (EDSAC). EDSAC, a stored program computer, used mercury delay line memory. Wilkes had attended the University of Pennsylvania's Moore School of Engineering summer sessions about the ENIAC in 1946 and shortly thereafter began work on the EDSAC.