This library is intended to control a LED device plugged on parallel port. A such device is composed of a number of LED (default is 8, maybe more is possible, I don't know) plugged on parallel port.
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Example
Here is a example program: ledstats-0.3.1.tar.gz. It shows you your current CPU usage by turning one to eight LED on a LED device. It also uses the last LED to simulate a heartbeat.
Here is another example from Giorgio bitflesh Luparia : control.c
Video
Giorgio Luparia made 2 video of what you can do with libpartportled:
- Right to left and left to right 
- Demo of ledstats
