MUSASINO-1

In March 1957, Japan's first parametron computer, the MUSASINO-1, was completed. With the project goal of achieving the same architecture as the ILLIAC 1 (to enable use of the huge ILLIAC library), Muroga Saburo was in charge of the logic design, Yamada Shigeharu was in charge of the memory unit, and Takashima Kensuke was in charge of the parametron elements and exciters. Approximately 5,400 parametrons were used in this computer, and its prototyping cost was ¥15 million at the time.