"The main reason for the existence of the ACS is to enable amateur computer builders to help each other, saving time and money by trading ideas."
@th at around 5:15 into the video at the bottom of the link you can see the MONIAC[1] in action
https://www.bbc.co.uk/blogs/adamcurtis/entries/9bf2f6f3-4d3d-3756-9841-d702cc884c46
"The simplest computer for which the schematics are available is the Univac FLODAC, which is actually a fluid-logic demonstrator." #retrocomputing