🌐 The First Internet Message!

October 29, 1969 — The Day Computers Started Talking on ARPANET, the network that grew into the Internet 🗣️💻

UCLA
University of California
Los Angeles, CA
LOG
Sending...
⚡ ARPANET ⚡
LO
~350 miles
SRI
Stanford Research
Institute, Menlo Park
LO!
Received!

Student programmer Charley Kline at UCLA tried to send the word "LOGIN"... but the computer at SRI crashed after only two letters got through!

📋 What Really Happened

🕥

The message was sent at about 10:30 p.m. from Leonard Kleinrock's lab at UCLA.

🧑‍💻

Charley Kline typed at UCLA while Bill Duvall watched the computer at SRI.

🔧

They fixed the problem, and about an hour later the full LOGIN worked.

✨

Kleinrock later joked that "LO" was the perfect first message, as in "lo and behold!"

🧭 The First 4 ARPANET Nodes