Cambridge Ring (computer network)

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Cambridge Ring

The Cambridge Ring was an experimental local area network architecture developed at the Computer Laboratory, University of Cambridge starting in 1974[1] and continuing into the 1980s. It was a ring network with a theoretical limit of 255 nodes (though such a large number would have badly affected performance), around which cycled a fixed number of packets. Free packets would be "loaded" with data by a machine wishing to send, marked as received by the destination machine, and "unloaded" on return to the sender; thus in principle, there could be as many simultaneous senders as packets. The network ran over twin twisted-pair cabling (plus a fibre-optic section).

People associated with the project include Andy Hopper, David Wheeler, Maurice Wilkes, and Roger Needham.[2]

In 2002, the Cambridge University Computer Laboratory launched a graduate society called the Cambridge Computer Lab Ring named after the Cambridge Ring.[citation needed]

See also[edit]


  1. ^ "A brief informal history of the Computer Laboratory". University of Cambridge. 20 December 2001. Archived from the original on 2010-10-11.
  2. ^ Andrew Hopper; Roger Needham. "The Cambridge Fast Ring Networking System" (PDF). ORL-88-1.

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