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parallel port optocoupler
u can use transistor & relay with out using optocouplers i used it it works use 1k resister between output of parallel port & transistor base, use relay(&reverse biased diode) between supply & collector,connect emitter on ground.
u can use any transistor (npn type) or...
visual basic parallel port interfacing
u can't normally use inportb() or outportb() because windows xp do not directly acess port it uses kennel mode i can't do it by C or C++ but if
u use visual basic then i can help u
Added after 6 minutes:
it can be done by inpout32.dall file in visual...
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