Measurement & Automation Explorer parallel command

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I am able to see LPT1 port in Measurement & Automation Explorer, but I am not sure that if I want to have Parallel port = 0 or = 255 ... can I write in Vi_Write 0 or 255? Or oupt 0 or outp 255?

*) I did connect pin 11 & 12 to GND

Thank to any help

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I found out the answer myself, just type directly the disired byte:

1      ---> bit 0   = ON

255  ---> 8 bits = All ON