Minecraft wiki entry for Pulse, associated text: Because a pulse divider must count the input pulses to know when to produce an output pulse, it has some similarity to a ring counter (an n-state memory circuit with only one state on). The difference is that a ring counter's output state only changes when its internal count is changed by an input trigger, while a pulse divider produces an output pulse and then returns to the same unpowered output it had before its count was reached (in other words, a pulse divider is monostable but a ring counter is bistable). Any ring counter can be converted into a pulse divider just by adding a pulse limiter to its output (making it monostable).