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Computing apparatus comprising a programmable resistor

  • US 4,782,460 A
  • Filed: 04/06/1987
  • Issued: 11/01/1988
  • Est. Priority Date: 04/06/1987
  • Status: Expired due to Fees
First Claim
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1. Electronic computing apparatus comprising(a) a multiplicity of amplifier means, each one of the amplifier means having at least one input terminal and at least one output terminal;

  • (b) means for electrically connecting the output terminal of any given amplifier means Aj to the input terminal of at least one other amplifier means Ai, the electrical connection having a predetermined resistance;

    (c) means for applying an electrical signal at least to the input terminal of one of the amplifier means; and

    (d) means that are responsive to the output signal of at least one of the amplifier means;

    characterized in that(e) the means of (b) comprise a programmable resistor body consisting substantially of a material having a state of relatively high resistivity and having a first and second major surface, a portion Si of the first surface being associated with Ai and a portion Sj of the second surface being associated with Aj, associated with the programmable resistor body is a resistance Rij between Si and Sj, the value of Rij being changeable from a relatively high value associated with the state of relatively high resistivity to a lower value by application of a "write" voltage between Si and Sj, and the value of Rij being furthermore changeable from the lower value to a higher value by application of an "erase" voltage between Si and Sj ; and

    (f) the apparatus further comprises means for applying the "write" voltage and the "erase" voltage between Si and Sj, such that a predetermined resistance Rij can be formed between Si and Sj, and such that the electrical connection of predetermined resistance between the input terminal of Ai and the output terminal of Aj is established.

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