A multi-functional completion tool which may be lowered into a wellbore coupled to a length of tubing, and then utilized to test various lengths of the tubing at pressure. A locking mechanism releasably maintains the lever in the brake-engaging position. Energy is provided to the reaction site and a reaction species is introduced to the growth substrate. The first data packet includes information indicating a period of time that at least a first processing element of the plurality of processing elements uses to process the first data packet.