A periodic fast signal to put out randomly to two different lines

thank you so patient to answer me so fragmentary question.
What I want is a two random fast digital output.However,two of outputs is related. superpose them will produce a periodic fast singal.In other words,when the line 1 put out "1",the line 2 put out "0".But when to put out "1" or "0" is random.
I have studied 6602 manual and the examples in Help menu.But I can not find way to do that.In DIO context,the digital I/O is static(In my view,it can not put out fast signal.What is the max frequency o f it?);and in counter context,pulse generation only put out a periodic signal.So I don't know how to do it.

I am a little confused with your question. On the NI-6602, you are correct in stating the digital lines are static (writing/reading to digital lines is controlled by software). Therefore, the speed of writing/reading to/from the digital lines will by system dependent.
It seems to me as if you want two pulse trains to start at the same time but be inverted. You could program the counters to share a start trigger and have one counter start at a digital low and the other counter to start at a digital high. This would produce two pulse trains that would be synchronized and inverted. I hope this helps.
Todd
Applications Engineer
National Instruments

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function(){return A.apply(null,[this].concat($A(arguments)))}
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