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Interrogation Method

IP.com Disclosure Number: IPCOM000094300D
Original Publication Date: 1966-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Gillet, JB: AUTHOR

Abstract

This interrogation method is concerned with a storage cell consisting of a pair of transistors having their bases and collectors cross coupled.

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Interrogation Method

This interrogation method is concerned with a storage cell consisting of a pair of transistors having their bases and collectors cross coupled.

Information is written into such a cell by decreasing the potential on the collectors so that both transistors turn off. Then one of the emitters is biased with respect to the other to determine which transistor conducts when the voltage on the collectors is returned to the quiescent potential.

Information is read from the cell by applying a negative-going pulse of equal amplitude to a write pulse but of short duration to the collectors. If the duration of this pulse is short compared with the storage time of the transistors, the transistors do not turn off but that which is conducting transmits a pulse to indicate the information stored.

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