So what was the first ARPANET message? I was able to find some interesting information on what the first ARPANET message was when looking it up. First off, ARPANET is short for Advanced Research Projects Agency Network. It was developed by DARPA, the Defense Advanced Research Projects Agency which is part of the United States Department of Defense. But what was the first ARPANET message? I still didn’t know.
While trying to find out what the first ARPANET message was, I learned that ARPANET was basically the birth of the Internet as we know it today. Packet switching was new and eventually took over from Circuit switching. It allowed multiple computers to connect to each other all at the same time, vs circuit switching, such as a telephone connection, which only allowed one connection at a time. But what was the first ARPANET message? I had further to go.
The first ARPANET message was sent on October 29, 1969. The message was sent host-to-host from the UCLA SDS Sigma 7 Host computer to the SRI SDS 940 Host computer. What was the first ARPANET message? It was “LO” actually. The first ARPANET message to be sent was “login” but after the first two letters were entered the system crashed so only the “l” and the “o” were sent. The full message was sent about an hour later.
