In which Usagi has Tom "Fidonet" Jennings' LGP-21, and is getting into maintenance & then programming.
https://www.sensitiveresearch.com/Archive/LGP-21/index.html

https://www.youtube.com/watch?v=snl0IuUvSfg
#retrocomputing #minicomputer

LGP 21

General Precision LGP-21 restoration.

The memory disk uses the Bernoulli effect to keep floating/rotating.

It's the disk equivalent of the drum memory from the Story of Mel.
https://users.cs.utah.edu/~elb/folklore/mel.html

#retrocomputing #mincomputer

The Story of Mel