Minecraft wiki entry for Pulse, associated text: A pulse generator generates a pulse
A pulse limiter reduces the duration of long pulses
A pulse extender increases the length of short pulses
A pulse multiplier produces multiple output pulses in response to a single input pulse
A pulse divider produces an output pulse after a specific number of input pulses
An edge detector produces an output pulse when it detects a specific edge of an input pulse
A pulse length detector produces an output pulse when it detects an input pulse of a specific length
A block update detector produces an output pulse when a specific block is updated (for example, stone is mined, water turns to ice, etc.)
A comparator update detector produces an output pulse when a specific comparator is updated by an inventory update