What are the blinking lights for behind Leo?

Episode 1704 (2:14:12)

Dave from Los Angeles, CA
Raspberry Pi 4

Dave wants to know more about the flashing lights box behind Leo. Leo says that computers in the 70s had switches, and the blinking lights would tell you when the software switches were enabled correctly. The irony is that the box behind Leo is run on a Raspberry Pi, which is hundreds of times more powerful than the box it's emulating. We've come a long way since then.