Dilithium sequencer
The dilithium sequencer was a type of engineering equipment in the 22nd and 23rd century. This electrically ed device was responsible for determining the order in which a series of operations involving dilithium were performed.

In September 2152, T'Pol had problems with the dilithium sequencers aboard  which caused a delay in shutting down the warp engine. ()

In 2286, Montgomery Scott converted the sequencer on board the  to something that was "...less primitive." ()

Energy technology