AND, OR and NOT are logic gate symbols. Logic gates calculate a single output using two condition inputs. Both the input values and the output of a logic gate are either of the two binary conditions: low and high. 0 represents low, and 1 represents high conditions.
For the output of an AND gate to be high, both input terminals must be high. 1,0 and 0,1 return a low condition. In comparison, the OR gate returns a high output as long as any of the input conditions are high. A NOT gate uses a single input and inverts it. A high condition becomes low, and a low condition becomes high.