The invention provides a novel class of scaffold-based labeled polymerase enzyme substrates. In an alarm setting mode, an initial alarm time input by the user is set as an alarm time of the terminal and a unit time for changing the alarm time is set. In an embodiment of the present invention, a scan bias voltage is changed depending on a sub-field, an APL or a data load. When the bias control arm is in the other of the first and second positions, a biasing force on the cartridge is increased and the cartridge is moved to the engaged position. The second transistor has a current carrying electrode coupled to the charge storage element and a second current carrying electrode coupled to another charge storage element. The first electrode layer has a conductive layer and a barrier layer.