An electronic assembly may be contained in a label that performs time-temperature integration and indicates that time andor temperature levels have been reached that may compromise the quality, shelf life, or safety of the item to which the label is affixed. The device comprises a look-up table for providing a first variable m and a second variable J satisfying the equation N2mJ; and an address generator for generating a read address depending on the first and second variables m and J provided from the look-up table. Signal lines through which signals are supplied to the pixels, are formed on the inner surface of either of the pair of substrates. Moveably coupled to the stanchion is a surface support adapted to support the surface of the structure when the edge of the structure is retained by the edge support.