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Parapin makes it easy to write code under Linux that controls individual pins on a PC parallelport. This kind of control is very useful for electronics projects that use the parallelport as a generic digital I/O interface (instead of as a printer port)
This is an application written in Java that can turn four pins on the parallelport high or low. It can also connect to a hosted PHP script that can be dynamically changed by the user. It was written to go the board found on <joevennix.blogspot.com>.