That has to be a very old garage door opener. Since 1996 garage door openers have rolling code numbers that total in the 100's of millions of possibilities and no pins. Chuck T.
P.S. So that I don't come across as a smartie pants--just today I programmed the garage door remote control built into my new car and I had to use the owners manual for my garage door opener for guidance. That's where the above info came from.