A tweet from Twitterverse:
Does it say ‘ping’?
RT @kenshirriff@twitter.com
We powered up the mysterious Up-data Test Box from the Apollo space program. It showed some lights and numbers on the display but we're still trying to figure out exactly what it does. 🧵
🐦🔗: https://twitter.com/kenshirriff/status/1432411774985195527