This desktop ENIAC simulator lets you learn about the ENIAC the way any respectable hacker does – by monkeying with it.
Our favorite 30 ton computer is turning 65 and not looking great for its age. But although the original is currently chopped into pieces and scattered across the world like Voldemort’s horcruxes, clinic there is a working ENIAC. It is a java applet that you can download and play with here.
The desktop version of ENIAC is by Till Zoppke, view who says he was inspired by the ENIAC-on-a-chip that was built at Penn. It is pretty impressive; you can move patchcords, set switches, and watch it go through it’s paces on a couple of sample programs. Try to break it, it’s only fair. There are some tutorials posted there too, for when you get stuck.
An article about the simulation, written by Raúl Rojas and Till Zoppke, is available there, called “The Virtual Life of ENIAC.” It is all hosted by our friends over at at Konrad Zuse Internet Archive.