hello I'm new here, and too much is not know I was curious last English-speed counters connected to the computer and I wonder how it is done or can do it yourself can have a schedule?

Some useful links here: http://forums.trossenrobotics.com/showthread.php?t=3291

thanks but this is only to buy and my question is whether there is any pattern to do it yourself because, as I see there are any patterns like that but I'm not sure I do not know how to connect it because I pomóżcie the simulator: D greet and thank