Abstract: The present invention relates to a thermoelectric conversion device using a solvating material, the device comprising: a cell with a closed structure, comprising a metal ammonia or metal amine compound as a solvating material; a polarization or porous separation membrane; and a heating unit, which prevents the outflow of the solvating material and thus maintains the solvating material in a reversible state.

Abstract: A parallel input/serial output device for inputting code bits in parallel and outputting the same in serial in a variable-length encoder divides a bit word into one with a sign bit and without a sign bit in a table for a variable-length encoder, sequentially stores the absolute values in the table in case of the bit word with a sign bit, sequentially stores the remaining bits with the most significant bit being stored finally in case of those with a sign bit, sequentially outputs bits from the next one of the most significant bit in serial and outputs the most significant bit as the last bit if the counted value becomes one. Therefore, the size of an internal conversion table can be decreased to a half, thereby reducing the number of used elements. Accordingly, the size of an address decoder can be reduced to a half and the operational speed can be improved.