There is provided a jitter amplifier circuit for amplifying jitter included in an input signal. A computer casing a side walls having an area with air permeable holes, right positioning slots, and a left positioning slot. A second wall of the liquid dispensing channel, positioned opposite the first wall, extends along a portion of the liquid supply and return channels. The method includes a means of determining an optimal combination of attribute preferences that have an acceptable probability of achieving plan goals while maximizing investor satisfaction as measured by total utility. A knock-down design also resorts to innovative designs in reducing component size so as to occupy a small footprint for ease of packaging and shipment.