Content-Addressable Memories

1. Front Matter

   Pages I-XIII

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2. Associative Memory, Content Addressing, and Associative Recall

   • Teuvo Kohonen

   Pages 1-37

3. Content Addressing by Software

   • Teuvo Kohonen

   Pages 39-124

4. Logic Principles of Content-Addressable Memories

   • Teuvo Kohonen

   Pages 125-189

5. CAM Hardware

   • Teuvo Kohonen

   Pages 191-239

6. The CAM as a System Part

   • Teuvo Kohonen

   Pages 241-279

7. Content-Addressable Processors

   • Teuvo Kohonen

   Pages 281-330

8. Review of Research Since 1979

   • Teuvo Kohonen

   Pages 331-342

9. Back Matter

   Pages 343-388

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Due to continual progress in the large-scale integration of semiconductor circuits, parallel computing principles can already be met in low-cost sys­ tems: numerous examples exist in image processing, for which special hard­ ware is implementable with quite modest resources even by nonprofessional designers. Principles of content addressing, if thoroughly understood, can thereby be applied effectively using standard components. On the other hand, mass storage based on associative principles still exists only in the long­ term plans of computer technologists. This situation is somewhat confused by the fact that certain expectations are held for the development of new storage media such as optical memories and "spin glasses" (metal alloys with low-density magnetic impurities). Their technologies, however, may not ripen until after "fifth generation" computers have been built. It seems that software methods for content addressing, especially those based on hash coding principles, are still holding their position firmly, and a few innovations have been developed recently. As they need no special hardware, one might expect that they will spread to a wide circle of users. This monograph is based on an extensive literature survey, most of which was published in the First Edition. I have added Chap. ?, which contains a review of more recent work. This updated book now has references to over 1200 original publications. In the editing of the new material, I received valuable help from Anneli HeimbUrger, M. Sc. , and Mrs. Leila Koivisto.

• Extension
• Skew
• associative memory
• control
• data structures
• design
• development
• image processing
• memory
• software
• switch

• Department of Technical Physics, Helsinki University of Technology, Espoo 15, Finland

  Teuvo Kohonen

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