Oh, I mentioned it in my last article, but parallel port circuits are incredibly simple to make, one of the crappy projects I have in my room is a simple 8 LED readout from a parallel port.
Parallel Port LED Array
That is a picture of it straight after I first set it up, I had made the front panel for it but i didn’t realise those two struts inside the case were in the way 
, so I could not put the front panel back on.
I have fixed it up since then, but it’s basically the same as that.
Very interesting & professional site. You done great work.