A blister pack has a main sheet unitarily formed with an array of pockets each dimensioned to receive a respective object and a frangible foil overlying a front face of the sheet and closing the pockets so that objects in the pockets are hermetically sealed therein by the foil. During operation, the system converts heat generated by a heat-generating device within the computer system during operation of the computer system into thermoelectric power. The electronic drawing has tagged locations identifying respective features of the multi-feature system to be read for retro positive material identification analysis. A sampling device for use with the analyzer engages the port and may include a recurrent coaxial tube having a separation medium. The means for incrementing operates in a first mode when the means for detecting detects a zero in any bit set less significant than the first bit set and operates in a second mode when the means for detecting does not detect a zero in any bit set less significant than the first bit set.