Composite sketch of Ethernet showing "ETHER!"

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  • Description
Date
1972
Credit Line
Courtesy of the PARC Library
Copyright Owner
© PARC (Palo Alto Research Center, Incorporated)
Object ID
500004469

The Ethernet protocol let a computer send a message whenever the wire was quiet. Every computer received every message, but ignored messages not for it. If two messages collided, they were sent again later.