I have four lasers and I need to trigger any one of them on each iteration of a counter - the laser is selected randomly each time via a random number. I want to send a TTL pulse to the selected laser from the PCIe-6259 card, and I understand it has three DIO ports with 32 lines each. I want to set up 4 digital output channels, but I am not sure how it is done. Can this be done? I am using NIDAQmx ansi C.