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"The Small-Scale Experimental Machine, known as SSEM, or the "Baby", was designed and built at The University of Manchester, and made its first successful run of a program on June 21st 1948. It was the first machine that had all the components now classically regarded as characteristic of the basic computer. Most importantly it was the first computer that could store not only data but any (short!) user program in electronic memory and process it at electronic speed. From this Small-Scale Experimental Machine a full-sized machine was designed and built, the Manchester Mark 1, which by April 1949 was generally available for computation in scientific research in the University. With the integration of a high speed magnetic drum by the Autumn (the ancestor of today's disc) this was the first machine with a fast electronic and magnetic two-level store. It in turn was the basis of the first commercially available computer, the Ferranti Mark 1, the first machine off the production line being delivered in February 1951. These pages tell the story of the Baby and the Mark 1, and give a record of the 50th anniversary celebrations for the Mark 1, and the machines that followed it."

"The University of Manchester has made a considerable contribution to the development of computing. This includes many "firsts" such as the first stored program computer, the first floating point machine, the first transistor computer and the first computer to use virtual memory. This Web Museum aims to show the achievements in computer design in the Department of Electrical Engineering and then the Department of Computer Science at the University of Manchester in the years up to 1975. It focuses on the 5 major machines built here and the people who built them."

en.wikipedia.org: "The Harwell computer, later known as the Wolverhampton Instrument for Teaching Computing from Harwell (WITCH), or the Harwell Dekatron Computer, was an early British relay-based computer. It is currently being restored at the National Museum of Computing, where it is described as 'the oldest original functioning electronic stored program computer in the world'."

"Welcome to The Heathkit Virtual Museum, a tribute to the Heathkit era—a time when building electronic kits was a favorite pastime for many electronics hobbyists. This commemorative virtual showcase takes you back to the Heathkit age which began in the late 1940's and lasted through the early 1990's."