【Hokushin Electric】 MD 1001A Magnetic Drum Unit for Auxiliary Memory

Hokushin Electric (which later became Yokogawa Hokushin Electric, and today is known as Yokogawa Electric) developed the MD 1001A magnetic drum unit for use as auxiliary memory for electronic computers. It had high-capacity (1,008Kbit) and low-speed rotation (3,000rpm), and was used in the Kintetsu Railway seat reservation system of NEC.

MD 1001A Magnetic Drum Memory Unit