Hi All,

I have a equipment whose operation invloves being triggered by a continuous 
pulse train of 1 Hz at TTL level. Currently I'm using a funtion generator 
with TTL o/p for doing that, but I want the operation be more automatic, so 
I'm considering using the parallel port of a PC to replace the function 
generator. However I wonder if the parallel port of a PC is TTL compatible. 
Could anyone give some comments?

Thanks in advance!

John


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