By Mark Ward
Technology correspondent, BBC News
The first recognisably modern computer is to be rebuilt at the UK's former code-cracking centre Bletchley Park.
The Electronic Delay Storage Automatic Calculator (Edsac) was a room-sized behemoth built at Cambridge university that first ran in 1949.
Creation of the replica has been commissioned by the UK's Computer Conservation Society (CCS).
The three-year re-build will be carried out before visitors to The National Museum of Computing at Bletchley.
Digital help
Edsac was one of several early British computers that pioneered the practical use of such machines.
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more:
http://www.bbc.co.uk/news/technology-12181153Pix of various pioneering computers at
http://www.bbc.co.uk/news/technology-12181153