Manchester Mark I Definition/Meaning:
The world's first operational stored-program computer, running
its first program in June 1948. It was designed by T, Kilburn and F. C. Williams at the University of Manchester, UK, commencing in 1946. Several improvements were added and the first realistic problem to be solved by the machine was
achieved in April 1949, shortly before EDSAC began operations. It became the
world's first commercially available computer when marketed by Ferranti Ltd in
1951 as the Ferranti Mark I. The effectiveness of the machine was due to its use
of electrostatic (Williams tube) storage.