Put a CLocK source in and each of the jacks will spit it divisions of that clock from 1 to 8. That is: /1 will spit out every CLocK pulse, /2 every second clock pulse, down to /8 spitting out every eight clock pulse.
Depending on the setting of a jumper on the rear of the module, gate pulse out is either: identical in duration to clock gate length; or, high for the duration of the clock step.
The module utilises discrete logic, not a microprocessor in sight. This enables it to run as fast as you can possibly push it – easily reaching audio rate and beyond.