i want to transmit a square pulse through USB port, is it possible?? if not then what is the best way to do that, preferable is with serial then parallel, and its compatibility with vista,XP,and @))7 windows

[NIquist]

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Intaris wrote:

So if I replace the tunnel with a shift register, my Sock won't be invalidated?

Cool.

Shane.

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Not only that.  If you keep adding shift register elements, every sock you've ever lost will be returned!