AND Gate
The AND gate is used to indicate that the output occurs if and only if all the input events occur. The output of an AND gate can be the top event or any intermediate event. The input events can be basic events, intermediate events (outputs of other gates) or a combination of both.
Logic Summary
All events must be true (T) for the output to be true (T). If any event is false (F), then the output is false (F). Table 5-1 shows example inputs and outputs for an AND gate with two inputs.
Table 5-1. Truth Table for AND Gate
Input A
Input B
Output
T
T
T
T
F
F
F
T
F
F
F
F