On Sat, 26 Oct 1996, Tim Gerla wrote: > Hmm... I tried that, but it did not work. I also connected the LED > anodes to the data pins, 2 and 3, and the cathodes to ground (18-25. > The LEDs stayed on when no data was transferring, and flashed off when > data was being transferred. that's because the ti uses +5v for 0 and 0v for 1 (bits).