A memistor is a nanoelectric circuitry element used in parallel computing memory technology. Essentially, a

resistor A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias activ ...

with memory able to perform logic operations and store information, it is a three-terminal implementation of the

memristor A memristor (; a portmanteau of ''memory resistor'') is a non-linear two-terminal electrical component relating electric charge and magnetic flux linkage. It was described and named in 1971 by Leon Chua, completing a theoretical quartet of ...

History

While the

is defined in terms of a two-terminal circuit element, there was an implementation of a three-terminal device called a ''memistor'' developed by

Bernard Widrow Bernard Widrow (born December 24, 1929) is a U.S. professor of electrical engineering at Stanford University. He is the co-inventor of the Widrow–Hoff least mean squares filter (LMS) adaptive algorithm with his then doctoral student Ted Hof ...

in 1960. Memistors formed basic components of a neural network architecture called ADALINE developed by Widrow. The memistor was also used in MADALINE.

Essence

In one of the technical reports the memistor was described as follows: Since the conductance was described as being controlled by the time integral of current as in Chua's theory of the memristor, the memistor of Widrow may be considered as a form of memristor having three instead of two terminals. However, one of the main limitations of Widrow's memistors was that they were made from an electroplating cell rather than as a solid-state circuit element. Solid-state circuit elements were required to achieve the scalability of the integrated circuit which was gaining popularity around the same time as the invention of Widrow's memistor. An article on ArXiv suggests that the

floating-gate MOSFET The floating-gate MOSFET (FGMOS), also known as a floating-gate MOS transistor or floating-gate transistor, is a type of metal–oxide–semiconductor field-effect transistor (MOSFET) where the gate is electrically isolated, creating a floating n ...

as well as other 3-terminal "memory transistors" may be modeled using

dynamical system In mathematics, a dynamical system is a system in which a function describes the time dependence of a point in an ambient space. Examples include the mathematical models that describe the swinging of a clock pendulum, the flow of water i ...

s equations in a similar fashion to the memristive systems of

References

External links

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Memistor - Research at Cisco
{{Electronic components Electrical components Electronic circuits in computer storage

History

Essence

See also

References

External links