Can the NI 4350 card output a continuous digital frequency?

[Lachy]

I am trying to send various frequencies of 0's and 1's through the digital lines using the NI 4350 (USB) but do not know if this is possible. Currently this is done via the printer port to control the speed of a stirrer but slows the computer down. I was wondering if this card can produce a continous pulse or has a buffer which can output a continuous frequency until a new fequency is specified.

Any ideas would be great. Thanks

[June]

The digital lines on the 4350 are capable of static or digital operation only and the speed depends on the software and operating system. You may want to consider either a counter/timer device or a 653x high speed digital device for pulse train generation.