Accession Number : AD0477446


Title :   CONTENT-ADDRESSABLE MEMORY TECHNIQUES.


Descriptive Note : Quarterly engineering progress rept. no. 2, 1 Aug-31 Oct 65,


Corporate Author : SPERRY RAND CORP PHILADELPHIA PA UNIVAC DIV


Personal Author(s) : Chow, W F


Report Date : 31 Oct 1965


Pagination or Media Count : 94


Abstract : An investigation is reported of the following: experimental verification of the current-steering and the readout mechanisms; theoretical analyses of the word-loop inductance (L), resistance (R), and capacitance (C) parameters and their effect on the current-steering and the readout mechanisms; development of a fabrication process for a new memory-plane configuration which has potential advantages over the first plane configuration. The current-steering and the readout mechanisms were successfully demonstrated. A high-power current-steering concept was originated. Theoretical analyses were made for both the low-power and the high-power steering schemes. Results of the analyses indicate that the high-power steering scheme can substantially increase the bit density of a CAM by a factor of about 2.5 to 1 over the low-power scheme. There is a penalty on the search speed which makes the high-power scheme about 30% slower than the low-power scheme. Progress in developing a fabrication process for a new memory-plane configuration was slow. Several methods were tried, but were not considered compatible with the goal of a low-cost, batch-fabrication process. No fundamental difficulty was encountered or anticipated. (Author)


Descriptors :   *MEMORY DEVICES , WIRE , FEASIBILITY STUDIES , PLATING , CORE STORAGE , MAGNETIC CORES , INPUT OUTPUT DEVICES , DATA PROCESSING , CIRCUITS , MANUFACTURING , THERMOPLASTIC RESINS , ISOCYANATES , ELECTRICAL INSULATION , SWITCHING CIRCUITS , DIGITAL COMPUTERS


Subject Categories : Electrical and Electronic Equipment
      Computer Hardware


Distribution Statement : APPROVED FOR PUBLIC RELEASE