Internet Turns 40 Today: First Message Crashed System

Forty years after the first network message of "lo" crossed California (pictured, a mainframe computer later used to send the first person-to-person network email in 1971), the Internet has transformed how people live, experts said in October 2009. Photograph courtesy Dan Murphy via BBN Technologies, Inc.

From The National Geographic:

Everyone surfing for last-minute Halloween costumes and pictures of black Lolcats today—what you might call the 40th anniversary of the Internet—can give thanks to the simple network message that started it all: "lo."

On October 29, 1969, that message became the first ever to travel between two computers connected via the ARPANET, the computer network that would become the Internet.

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