A circuit for generating a delayed output in an inputoutput port of a device adapted to implement circuits operating on a range of voltages is disclosed. An amount of the activation agent used is sufficient to form the carbon material having at least 90% of a total pore volume of the carbon material composed of micropores, and 10% or less of the total pore volume composed of mesopores and macropores. Each arm extends radially inward from a distal end connected to the body portion to an engageable end receivable within the central hole. Since the adjoining square pipes are assembled in a staggered arrangement, boundaries of the cells are defined by the walls of the square pipes itself. The floating gate is formed on the second gate insulating film. The controller calculates the chemical concentration of the chemical in the sample based on the measured fluorescence emissions.