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An electronic digital polynomial root extractor


Johnson, Robert Royce (1956) An electronic digital polynomial root extractor. Dissertation (Ph.D.), California Institute of Technology.


Many mathematical techniques exist for factoring algebraic polynomials. Most require much computation and programming and are practical methods only with large machine computers. A special purpose electronic digital computer designed to factor polynomials of high degree is described. The mathematical method is an adaptation of a Taylor serial approximation used to connect the problem and its formulation with a special machine implementation. The computer uses a small rotating magnetic drum, about 200 germanium diodes, and 20 logical flip-flops. Unique features of the system are the simple algebraic logical design techniques and the ease of programming. The result is a small, simple, and useful computer.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Frankel, Stanley P.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1956
Record Number:CaltechETD:etd-03242004-145118
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1092
Deposited By: Imported from ETD-db
Deposited On:25 Mar 2004
Last Modified:26 Dec 2012 02:35

Thesis Files

PDF (johnson_rr_1956.pdf) - Final Version
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