The invention provides substituted pyrazolidinone compounds, and methods of treatment and pharmaceutical compositions that utilize or comprise one or more such compounds. The plurality of memory chips include a chip selection signal input section configured to make a drive-targeted memory chip selected or non-selected, based on an input signal. A geographic location for the mobile device is calculated by using the information contained in each of the received signals. A compensation capacitor is electrically connected between an input of the inverting amplification block and an output of the inverting amplification block, and a switchable capacitor is electrically connected between the input of the inverting amplification block and the control pad.