Abstract: An electric multiple-valued register for electrically maintaining a multiple-valued digital signal of a ternary value of (0, 1/2, 1), quaternary value of (0, 1/3, 2/3, 1) or quinternary value of (0, 1/4, 2/4, 3/4, 1) instead of a binary digital signal such that 1 digit is of 0 or 1 is realized by inserting an element having a stair shaped voltage-current characteristic into a coupling circuit of a conventional flip-flop circuit. It may be used for a quantization circuit with the aid of a step characteristic, a multivalued memory, a multivalued register, a multivalued loop memory, a multivalued pattern matching circuit, a voice recognition divide, pattern recognition device, or a associative memory device.

Abstract: A dry method for making high-purity metal powder through quenching, by melting metal in a melting vessel with high-frequency induction in vacuo or in an inert gas atmosphere, lowering the melting vessel to a jetting position where a rotary cooling board is disposed along outer periphery of the melting vessel, centrifugally jetting the molten metal from the melting vessel by rotating the melting vessel in a direction while rotating the rotary cooling board in the opposite direction, and simultaneously quenching and splitting centrifugally jetted molten particles of the metal by causing the molten particles to collide with the rotary cooling board.