The AND gate is a basic digital logic gate that implements logical conjunction - it behaves according to the truth table below. A HIGH output (1) results only if both the inputs to the AND gate are HIGH (1). If neither or only one input to the AND gate is HIGH, a LOW output result. In another sense, the function of AND effectively finds the minimum between two binary digits, just as the OR function finds the maximum between two binary digits. Therefore, the output is always 0, except when all the inputs are 1.

INPUT		OUTPUT
A	B	A AND B (Q)
0	0	0
0	1	0
1	0	0
1	1	1

Truth Table

MIL/ANSI Symbol

Source: Wikipedia, The Free Encyclopedia, AND gate (Accessed September 24, 2017)