Voting GateThe Voting (M/n) gate is used to indicate that the output occurs if and only if M out of the n input events occur. The output occurs when at least m input events occur. When M = 1, the Voting gate behaves like an OR gate. The output of a Voting gate can be a top event or an intermediate event. The input events can be basic events, intermediate events or a combination of both.
Logic Summary
If M = 2 and n = 3, two (2) input events must be true (T) for the output to be true (T). If only one input event is true (T), then the output is false (F). Table 5-3 shows the input and output events for a 2 out-of-3 Voting gate.
Input A | Input B | Input C | Output |
|---|---|---|---|
T | T | T | T |
T | T | F | T |
T | F | T | T |
T | F | F | F |
F | T | T | T |
F | T | F | F |
F | F | T | F |
F | F | F | F |