The Either/Or Probability Trigger is a biased coin flipper whose that sends a 1 to either the A or B output every time a trigger pulse is applied at the Trig input. It is biased by the Probability fader which can favor either the A or B output to send the 1 signal to. For a true coin-flipper, set the knob to 0.5.
A truly essential module for humanizing things like drum patterns.