A semiconductor memory device includes a first select transistor, first stepped portion, and a first contact plug. The construction block includes first and second opposing block faces, a top and bottom, and opposing ends. The microcontroller device includes an input capture port for storing data read from the card, and wherein the microcontroller device continually poles the input capture port for an event to occur. If the cushion cells, upon receiving the head of an occupant, exhibit an internal pressure higher than a predetermined value, gas flows into a secondary chamber through the air-permeable panel. Another side of the bottom end of the back frame is pivotally engaged with a rear section of the seat frame. An accounts payable system may include a host system in communication with one or more client systems.