Accession Number : AD0432041


Title :   STUDY OF ELASTIC SWITCHING FOR ASSOCIATIVE MEMORY SYSTEMS.


Descriptive Note : Final rept.,


Corporate Author : GOODYEAR AEROSPACE CORP AKRON OHIO


Personal Author(s) : Hunt,R T ; Snider,D L ; Suprise,J ; Boyd,H N


Report Date : Feb 1964


Pagination or Media Count : 50


Abstract : Various ferrite materials were tested for elastic switching properties that will increase the speed of associative memory systems. Elastic switching utilizes high-amplitude, narrow-width (50 nsec) read-pulses that permit nondestructive readout. Because of the nondestructive readout, the exclusive-or function can be obtained within the memory. The S/N ratios, output voltages, and maximum speed of operation were studied for various temperatures, bias currents, and read-current drive requirements. Several materials had S/N ratios higher that 2 to 1 in operation under nominal conditions. Changes in temperature up to 70 C did not impair the elastic switching properties. Output voltages varied linearly and in proportion to changes in temperature, approximately 20 percent for most materials for a change from room temperature to 70 C. The S/N ratios were fairly constant to 70 C. The maximum speed of operation was determined as 10 x 10 to the 6th power interrogations per second. The optimum size of an elastic switching memory was also considered. (Author)


Descriptors :   *CORE STORAGE , ELECTRONIC SWITCHES , MEMORY DEVICES , FERRITES , TIME , COMPUTER LOGIC , VOLTAGE , TEMPERATURE , ELECTRIC CURRENT , MAGNETIC CORES , TEST METHODS , STABILITY , STABILITY


Distribution Statement : APPROVED FOR PUBLIC RELEASE