The link above (https://alex-j-lowry.github.io/leningrd.htmlI%E2%80%99m) didn't work for me on Firefox x64 but taking the last few characters off does work: https://alex-j-lowry.github.io/leningrd.html

Fixed link here : https://alex-j-lowry.github.io/leningrd.html

Sorry all. It’s a worthy read if you are into Soviet computing.