I've been a computer geek for a long time. The first computer I bought was a kit where I had to solder all of the parts and sockets into place. I had constructed several electronic kits before (mostly from Heathkit), but this was actually the first one that worked the first time I powered it up. It was made by a company called PAIA and was designed to control a music synthesizer kit they also sold. You programmed it by entering code two symbols at a time. The code that was used was hexidecimal, an alphanumeric code just like our regular decimal system (0–9) except you need to have 16 fingers. You had to key in hundreds of code entries to get it to work. If you made a mistake in entering