How can I display a TTL-Signal immpressed at a parallel port?

[wimmer franz]

I get a real TTL-Signal from a resolver which is connected at the parallel port. From this parallel port I would like to read the frequency of the signal coming in. The resolver is connected at the parallel port at only one data pin and at a ground pin, without using a DAQ. (In past I used the InPort- Box of a example in developer zone, but it didn't work, because of the C-code)
Thank you for your help, Bernd & Franz

[ThomasD]

Hello,
enclosed there is an application note which shows how to work with the serial port.
http://zone.ni.com/devzone/conceptd.nsf/webmain/72C6FC6CE4AD4D1386256B1800794596?opendocument
If there are example codes for similar issues, you can find them here.
http://www.ni.com/devzone/dev_exchange/ex_search.htm

Regards
Thomas D.
NI Germany
(SRQ 205407)