An antique computer bigger than a refrigerator

Leonard Kleinrock, a professor at the University of California, Los Angeles and the father of the Internet, led a research team to carry out computer networking experiments 40 years ago, and successfully sent the world's first email to the computer at the Stanford Institute, which was the first communication between two computers in the history of the network, laying the foundation for the rapid development of today's Internet era. The object larger than a refrigerator is the computer that was used to transmit information.