Building an Interface - Junior Mathematical Conference, Miskolc, 1999
In 1999, I participated in the Junior Mathematical Conference in Miskolc, Hungary, where I presented a device serving as an I/O interface between a PC and other electronical devices. The written version of the presentation was published in the periodical Pi.
The finished device (version 1)
A diagram of its structure
I used a custom editor I wrote in QBasic to plan the printed circuit boards...
...and a C programme running under Linux to render them
Version 2: an ISA card
The card as built by Gyorgy Horvath