Emebere igwe a maka ncha akpaka otu okirikiri. A na-esi n'akụkụ aka ekpe nke onye na-ebufe nri na-enye nri emechara nri ma bufee ya n'ime usoro mkpuchi, mgbe ahụ ịkpụ akwụkwọ, ịkwanye ncha, mkpuchi, na ịwụsa. Igwe ahụ dum na-achịkwa PLC, nke ukwuu na-akpaghị aka ma na-anabata ihuenyo mmetụ maka ịrụ ọrụ na nhazi dị mfe.