The Parametron Digital Computer MUSASINO-1

Features of a large-scale digital computer with novel logical elements, the parametrons, are described. The machine, which is located at Musashino City, Tokyo, was named the MUSASINO-1, and has been in almost continuous operation since its completion in the spring of 1957. Primarily for scientific uses, it does arithmetic operations in parallel, and has a fast access memory of ferrite cores with nonrectangular hysteresis curve. Maintenance experience has indicated its extreme stability and low incidence of faults.