Eddycard memory: a semi-permanent storage

T. Ishidate; Seiichi Yoshizawa; K. Nagamori

DOI:10.1145/1460764.1460778

Corpus ID: 16368738

Eddycard memory: a semi-permanent storage

@inproceedings{Ishidate1961EddycardMA,
  title={Eddycard memory: a semi-permanent storage},
  author={T. Ishidate and Seiichi Yoshizawa and K. Nagamori},
  booktitle={AFIPS '61 (Eastern)},
  year={1961}
}

T. Ishidate, Seiichi Yoshizawa, K. Nagamori

Published in AFIPS '61 (Eastern) 1961

Computer Science

A high-speed semi-permanent memory using closed-loop conductors as coupling media is described. Sense wire detects eddy currents in the closed-loop, which are induced by the drive current. Closed-loops on the Eddycard are cut out by a punch to store the information ZERO. Complete loops represent the information ONE. After the discussion of basic fundamental results, 1024 word 45 bit experimental Eddycard memory system is introduced. It works at a read cycle time of 100 millimicroseconds in… CONTINUE READING

View on ACM