Therefore, neurons communicate information in one of three ways: (1) firing frequency (the number of action potentials per second), (2) firing location (which neurons fire), and (3) firing number (how many neurons fire). In this way, it is said that neurons are binary in action, analogous to the binary digits of a computer—1 and 0—which correspond to an “on” or “off” signal being passed along a neural pathway or not.