NPL switch box

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Photographer
Richards, Mark
Dimensions
overall: 1 3/4 in x 4 3/4 in x 2 3/4 in
Manufacturer
National Physical Laboratory
Credit Line
Loan courtesy of the National Computing Museum, UK
Copyright Owner
© Mark Richards
Object ID
500002029

These handmade “buttons and lights” switch boxes connected terminals to the NPL network developed by packet-switching pioneer Donald Davies. NPL was a competitor to ARPANET.