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A Dictionary Machine (for VLSI)

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3 Author(s)
Ottmann, T.A. ; Institut für Angewandte Informatik, University of Karlsruhe ; Rosenberg, Arnold L. ; Stockmeyer, Larry J.

We present the design of a dictionary machine that is suitable for VLSI implementation, and we discuss how to realize this implementation efficiently. The machine supports the operations of SEARCH, INSERT, DELETE, and EXTRACTMIN on an arbitrary ordered set. Each of these operations takes time O(log n), where n is the number of entries present when the operation is performed. Moreover, arbitrary sequences of these instructions can be pipelined through the machine at a constant rate (i.e., independent of n and the capacity of the machine). The time O(log n) is an improvement over previous VLSI designs of dictionary machines which require time O(log N) per operation, where N is the maximum number of keys that can be stored.

Published in:

Computers, IEEE Transactions on  (Volume:C-31 ,  Issue: 9 )