The sole FIGURE is a top plan view showing my new design. The clipboard has a planar board member with a front face, a rear face, two side edges, a top end, a bottom end and a clamping mechanism having at least one biasing element and a clamping element. Remanence provides the memory element with a biasing magnetic field. The detected anomaly is correlated with at least one of a plurality of external events affecting the computing system. A voltage held on the input side of the capacitor and differential input unit is outputted as an output voltage OUT from the output terminal.