STUDY OF ELASTIC SWITCHING FOR ASSOCIATIVE MEMORY SYSTEMS.
GOODYEAR AEROSPACE CORP AKRON OHIO
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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 SN ratios, output voltages, and maximum speed of operation were studied for various temperatures, bias currents, and read-current drive requirements. Several materials had SN 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 SN 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