PS - If you are interested in drawing, you might look up books and especially pictures of ENIAC, often called the first electronic computer. It was programmed with patchcords so it's visually more interesting than all the gray boxes that came after. It looks more like a giant Moog synthesizer.

Try an image search on: Eniac monte carlo patch cords

Or look in the book Eniac in Action by Thomas Haigh et al. Lots of ENIAC-related diagrams linked to this page:

https://eniacinaction.com/the-book/supporting-technical-mate...

for example this flowchart:

https://eniacinaction.com/docs/MonteCarloSecondRunFlowDiagra...