The Cambridge Ring was an experimental local area network architecture developed at the Cambridge University Computer Laboratory in the mid-late 1970s and early 1980s. It used a ring topology 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).
- Cambridge Ring Hardware
- Cambridge Fast Ring
- Cambridge Backbone Ring Hardware
- Cambridge Computer Lab Ring
- "Ring PCB". Relic Archive. University of Cambridge Computer Laboratory. Retrieved 9 April 2011.
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