Anybody knows how to control parallel port to generate digital line ?

[Gilbert-Lin]

All,

     I have found at some website, there are a software can generate corresponding signal (I suppose that is digital line) to driver a relay board, the relay board is 8 channels. which out put is pin 2, pin3, pin 4, pin5, pin 6, pin7, pin8 and pin 9 of parallel port to control it . it is well control, how can it do ?  and I want to simulate it at LV with parallel port too , how can it achieve ? which command, or a simple sample which you provide will be appreciated.

thanks in advance.

[SergKr]

You forget to search through NI Web site. Here are some links.
http://zone.ni.com/devzone/conceptd.nsf/webmain/72C6FC6CE4AD4D1386256B1800794596
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B123AE0CB9CB111EE034080020E74861

[Gilbert-Lin]

Thank you, SergKr, I got it.

BTW, can parallel port read digital line ?